B. because the it describes most of the passage as violent which as you read on you see it's violent
The Cold Equations" absolutely underscores the role of technology in undermining human choice; the title itself, using the adjective 'cold,' connotes a lack of warmth and human perspective.
'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.
The answer is B:the guests are mET, the feast is sET