Which sentence is a compound sentence?

a.
suddenly, fluffy white kernels began to appear.

b.
the popcorn filled the pot, and the lid started to rise!

c.
as the movie began, we settled on the couch and ate our popcorn.

d.
the popcorn hissed and sputtered in the pot before it started to pop.

gibberellin = 2

coconut milk = 1

auxin = 3

hope this !

two factors or characteristics of a chapter that might make it difficult to read would be words i don't understand, or if i don't fully understand what's going on in the chapter. strategies i can use to get through the difficult material would be a dictionary, and re-reading previous chapters to get a better grasp of what the author is trying to say.