For acceptable order questions, go through the rules and use them to eliminate answers one by one.
On this question, you must combine two rules to eliminate D and C. That’s unusual, but the process is the same.
When I solved this, I eliminated all the answers I could get rid of with a single rule, then I examined the remaining answers in more detail to see if they violated a combination of rules.
Rule 5 eliminates A and B. Petrels must be lectured on earlier than Terns.
None of the other rules eliminate any answers on their own.
Rules 1 and 4 eliminate D. The first lecture is in Gladwyn Hall, and the Sandpipers lecture is in Howard Auditorium. So Sandpipers can’t go first.
Rules 2 and 5 eliminates C. Petrels must go in Gladwyn Hall, and the fourth lecture must be in Howard Auditorium. This answer places P fourth.
E is CORRECT. It violates no rules.
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