When should a comma be used? (1 point) O to create a pause
O to build suspense
O to end a sentence
O to change the subject

The implicit details in this excerpt best support the conclusion that mrs. long feels angry about having to ask to borrow books. the speaker asks for books that were often difficult to find. the speaker appreciates the librarian's efforts to get her books. young children are not allowed to borrow books on their own.