What is a adverb and a conjunction?

Which detail from the text best demonstrates the effect of totalitarianism on the animals? "progress was made in the dry frosty weather that followed." "it had been decided to build the walls three feet thick." "they were always cold, and usually hungry as well." "for a long time the quarry was full of snowdrifts and nothing could be done."

Comparing and contrasting is a form of

Write a review of the first part of american born chinese that explains your opinion on the effectiveness of two different plot elements