B correct. So always read all the answer choices and only choose the one that is the best, not just the first one you read that is factually correct.
Strategy 12: First Word Analysis
When asked for main ideas that best summarize the passage, an easy strategy is to look at the first words in each answer choice and without looking at the rest of the answer choice, see if you could make a decision based on those first words alone.
Example:
Question: Which of the following best explains the author’s primary purpose?
A. dispute…
B. describe…
C. condemn…
D. convince…
If you know that the passage is fairly neutral about the subject, then even if you know nothing else, you can probably eliminate the stronger verbs used in answer choices A, C, and D, leaving you with “describe” or answer choice B as being correct.

