Answer:
d. Avoid conflict
Explanation:
Brian lacks the capacity to say "no" and instead of standing up for himself and his pre arranged plans, he would rather not meet his needs in order to avoid conflict that would arise between him and Benjamin if he were to say "no". There are different reasons why he chooses to avoid conflict in this case, he does not want to "ruin" his relationship with Benjamin, fear of rejection for speaking up, believing his opinion is not valid, etc.