I'm pretty sure its A but I could be wrong
A. is the most sensible answer tbh, the librarian is inside a library she/he wouldn't really pay attention to kids. Books on gender roles may be in there a bit but not completely since it won't really talk about what you're trying to search for. Articles on phycology definitely isn't going to helped learn about children on the playground.
Answer:
came, changed, wore, watched, had, i've never seen, given up, noticed, could, was, were gone
Explanation:
It means being exact and accurate
