DISCUSSION: The passage does nothing but talk about the platypus’ bill. That’s the main point.
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- This only describes paragraph 2. The passage is much broader.
- CORRECT. The passage is mainly devoted to describing Bohringer and Scheich’s studies. Those studies talk about platypus bills.
- This leaves out Scheich. Also, the passage seems to accept Bohringer’s work as valid, without assessing it.
- This is the reverse of C: this answer choice ignores Bohringer.
- This is very vague. The passage discussed many other things: the two studies, how the platypus found prey, electric impulses, etc.
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