The answer would have to be "The florida flowers were shy children who ducked their heads"
this is due its use of figurative language where it refers to "shy children" as "florida flowers"
also, through the process of elimination you can get rid of A.) since it is describing that pine trees in north carolina grow very tall. B.) is claiming that large amounts of syrup are produced by maple trees in Vermont. and finally D.) because it states that the Arizona desert has multiple green cacti.
through the process of elimination you can find the only relevant answer would have to be (C)
Hope this helps