the answer is b a simile .
#3 i believe. It is the only answer that isn't too informal and also flows/transitions well into the paragraph.
It was mostly between 1990 and 2010.
I think maybe 2008 was the highest. (NOT SURE)
hope this helps!!
A perfect class room pet would be a gerbil because it is easy to take care of. It is also very small so it won’t take up a lot of space. Another reason would be that a gerbils cage is very easy to clean out.
This sentence is a fragment
