Answer:
C. Contrast
Step-by-step explanation:
The bolded word is arrogant!
When words or phrases like unlike, as opposed to, far from, dissimilar, disparate and others of the similar meaning appears in a context, they're used bring contrasting ideas together.
The above statement shows that
1. His brother his arrogant
2. He didn't tell anyone he's smart
From (1), we understand that Marcus is not arrogant
From (2), we understand that his brother tells everyone he's smart
The analysis above and the extracted statement 1 and 2 show contrasting ideas.
Hence, the right answer is C. Contrast