Circle the correct answer 1. It was a dark night, and it heavily outside
a. rained b. raining c. was raining d. rains

this would be in the imperative mood. it is a category of verb forms that are used to express orders,instructions,commands or requests.

harry says he would trade a gold mine for a glass of water.

the answer to the given question above would the one that wiesel is establishing and how is ethos by appeal to his authority in having survived the holocaust. hope this answers your question.

have a great day ahead!