Answer:
The rising action occurs when Rainsford finds out that he is being hunted by General Zaroff
A flashback tells something from the past so the answer would have to be (A) this is because of the use of the word recall. In every other option the verb is present or future tense instead of past tense.
Ponder means "to think about (something) carefully," which is most similar to D. Reflect. Ponder basically means, "to reflect on" something.