Answer:
Very important
Explanation:
I believe libraries are very important because they bring knowledge and have been around for a long time. Even though we have millions of answers at our fingertips, libraries store much information that isn't on the internet or is easier to gather through books. Libraries are essential in communities for lower-income families who can't afford technology as well as to keep physical books on hand in case technology goes out or some people learn better through physical books rather than a computer screen. There is so much a library can offer that many people in my community use it for. Like printing school work, having a quiet place to read, finding interesting books, searching for something on the web, and so much more! I believe students will have a harder time without libraries in my community. When I enter community libraries I always see people of all ages and genders which proves that it isn't just for some people. Its for all to use which makes it essential.
The most probable and most likely answer to this problem would be C. revealed much about their behavior.
Out of the four options presented in this problem, C. would only need a complete subject to make it a correct sentence. Options A. by closely watching and gathering data and B. to terrifying effect would probably need other more words and/or phrases to make them more complete. D. insect studies, on the other hand, can also be considered as a correct option IF insect become the subject.