She is prettier than her sister.
B. to ensure that the colonists relied on trade for food
to sing in the choir is an infinitive. an infinitive is a basic form of a verb doesn't necessarily need a subject like it's understood so the understood subject is there when the phrase is said so "sing in the choir is your basic verb so it's an infinitive
The parallelism is the use of several components in the same sentence that has the same meaning, meter, sound or construction in this part of the passage “goggled his mind, muzzled his speech, goggled his perception, muzzled his protest”, the author describes what the monster has done to the driver’s hands in several ways using the parallelism. The answer is D.