Answer:
B. Are specific.
Step-by-step explanation:
When doing research in a library or using a search engine, using general terms to perform a search might not yield the results one seeks. In order to ensure finding in-depth information about a topic, one must be specific with the words used to perform the seach.
Conjunctions and punctuation marks will commonly get disregarded, so sticking to crucial keywords relating to the topic is the proper way to perform the search.