LSATHacks
  • Explanations
  • Tutoring
  • Courses
  • Login
  • Cart
  • Explanations
  • Tutoring
  • Courses
  • Login
  • Cart
LSAT Explanations › Preptest 140 › Reading Comprehension › Question 25

LSAT 140 | Section 4 | Reading Comprehension: Q25

LSAT Preptest 140 explanations

RC Question 25 Explanation

DISCUSSION: Author agreement questions are heavily based on the passage. You can usually find a specific line that proves the right answer.

Questions like this show that it’s worthwhile to take extra time reading and understanding the passage. This will improve your recall of the details, and help you spot the right answer on this type of question.

___________

  1. The author actually never mentions optical equipment or mirror quality. Presumably an explanation for mirrors should make sense even for poorly constructed mirrors, and even if we don’t have fancy equipment to confirm the theory.
  2. The author only mentioned two theories of mirrors, and they only argued one of them was wrong (the front-to-back) theory. So the author doesn’t say why mirrors explanations fail in general.
  3. CORRECT. The first sentence of paragraph 4 supports this. They say that the observer/phenomenon separation is part of the reason why some scientists support the front-to-back theory.
  4. The second sentence of paragraph 3 says “we” think in terms of mental constructs. Mental constructs seem natural. The passage doesn’t say any of us avoid mental constructs. And even some scientists like the front-to-back theory, so they must be thinking in terms of mental constructs.
  5. This is almost right. If it had ended by saying “mental constructs interfere….with an accurate understanding of how mirrors work” then this answer would have been right.
    But the answer doesn’t say that. You need to read every word on the LSAT. The passage doesn’t say that mental constructs interfere with our understanding of perceptions.
Previous Question
↑ Return to PT 140
Next Question
Quick Jump PT Section Que

Hi, I'm Graeme Blake

I scored a 177 on the LSAT. I founded LSATHacks and created the LSAT Mastery Seminars to help students succeed.

I’ve personally written explanations for 5,000+ LSAT questions. If you find these explanations helpful, you'll definitely like our courses.

Join my email list for LSAT study tips and resources.

Comments

  1. James says Member

    November 24, 2017 at 2:26 pm

    For 25, I thought (C) was the best answer by far (with [E] a weak second) but I was hesitant because they used the term “physicists” in the AC and “scientists” in this answer’s supported passage lines.

    I know that physicists are scientists like Catholics are Christians, but this passage specifically used the terms “physicists” and “scientists” in different paragraphs. I feel like (C) is kind of cheap on LSAC’s part; they could have said scientists to avoid this kind of trepidation for test takers who noted the subtle difference.

    Reply
  2. Tina says

    October 9, 2016 at 7:14 am

    Hi,

    So do you mean we should read the whole passage for questions like this?

    Reply
    • Lucas (LSAT Hacks) says Tutor

      November 1, 2016 at 2:04 pm

      If you’ve taken the time to understand the passage and make quick summaries of each paragraph as you read, your short-term recall of the passage should allow you to very quickly the scan the passage for the relevant area(s) where the answer is found. You can then quickly find the relevant sentence(s) to determine the right answer.

      Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Free LSAT Email Course

My best LSAT tips, straight to your inbox

Increase Your Score

LSATHacks Courses Aiming For The 170S? See exactly how a top scorer thinks INCREASE YOUR SCORE
“The seminars teach you how to think like a high-scorer so that you can choose the correct answer quickly.” — Jay
“Not only did my score improve but I was able to approach LR with utter confidence” — Kacie L.

Resources

  • Articles
  • Blog
  • Free Email Course
  • LSAT Preptest Converter
  • Experimental Section Checker
  • LSAT Prep Books

About LSATHacks

  • About/Contact
  • Courses
  • Free Trial

Community

  • Discord
  • Social Media
  • Webinars
Disclaimer: Use of these explanations requires official LSAT preptests. LSAT is a registered trademark of LSAC.
LSAC does not review or endorse specific test preparation materials or services and has not reviewed this site.

© Copyright 2026 LSATHacks. All Rights Reserved. | Privacy | Terms