Is 'Most states require training and tests in bug identification and use of chemicals.' a simple, compound, or complex sentence?

"the sandy walls seemed to collapse in on themselves"

and

"the bloodshot waters seemed to have no bottom"

b is the answer.   i sat on the lumpy sofa, totally exhausted, with a bad taste in my mouth, wondering what i should do next.  

answer: a mother fears that the poor lighting poses a danger to the children who play there.