Answer:
Mr. Bennet believes Mr. Gardiner gave Wickham money to marry Lydia to prevent a scandal and protect the family's reputation. Therefore, the correct multiple-choice option is (B).
Step-by-step explanation:
Mr. Bennet believes Mr. Gardiner provided money to Wickham to marry Lydia because he thinks Mr. Gardiner was trying to prevent a scandal. This belief is based on the understanding of the social context of the time in which Pride and Prejudice is set, where a woman's and her family's reputation could be significantly harmed by such scandalous behavior.
Mr. Gardiner, being a caring relative, likely wanted to protect the family's reputation and ensure that Lydia was married to avoid disgrace. Therefore, the correct multiple-choice option is (B).