Answer:
A) Captain Beatty wanted to inform Montag of the important role fireman fulfill within their society and subtlety warn him about taking home books.
Step-by-step explanation:
This is the main reason why Captain Beatty decides to visit Montag. When Montag does not show up at work, the Captain can accurately guess that Montag is having doubts about his role and about the burning of books. Captain Beatty, therefore, wants to visit him in order to remind him of the work that firemen fulfill in society. Moreover, he wants to warn him about taking home books.