The answer is B, an.
The answers for 2 and 3 are A then C.
Traditional Native Americanism, If not correct please forgive me
Figurative language is most common in poetry, but poetry does not always explore thought in a concise way, more often it tried to convey a feeling or an impression than treats the subject in detail.
Therefore I would choose a "novel" - it can use figurative language (unlike exploratory essay), but it also deals with ideas and thought is a profound, comprehensive way (but note that some poems will also do that!)
Mar means to ruin, saunter means to walk without rushing, amble means to walk in a calm relaxed way, decorate means to put items on something to make it look more appealing, lush means abundant, and slender means slim or thin.
The correct answer would be c. essay test