The teenager was afraid to the question of borrowing the car.
He hated to begin a conversation after he wrecked their car the last time he
borrowed it.
Hubris
vexed
O
broach
mutiny

The teenager was afraid to broach the question of borrowing the car. He hated to begin a conversation after he wrecked their car the last time he borrowed it.

Explanation:

Your task is to determine which word was omitted from the given sentence.

When you're unsure about what a word means, you can look it up in a dictionary - an alphabetically arranged listing of words that contains various information about them, such as their definitions, examples, origin, pronunciation, etc.

The correct option is broach. When you broach a subject (or in this case, a question), especially a sensitive one, you mention it in order to start a discussion on it. This definition perfectly fits the context.