Answer:
C. wear clothing suited to the occasion
<span>Marcus Junius Brutus, often referred to as Brutus, was a politician of the late Roman Republic. After being adopted by his uncle he used the name Quintus Servilius Caepio Brutus, but eventually returned to using his original name.</span>
'That' is A, a demonstrative pronoun. Because you are referring to that person, you are basically pointing at your cousin, therefore it must be a demonstrative pronoun.
