I would say C.
The numbers on the map range from 48-64, so this shows that the trees need no more than 64 inches (so not answer choice d)
and no less than 48, since 48 is between 30-50, the answer is C.
Cilia helps in movement of the organism, it can pass the content (gases like CO2, O2) so they can transport. It can migrate an organism to more sustainable environment
Hope this helps!
If its a heart its circulatory, lungs respiratory, kidneys excretory, brain nervous, stomach digestive, hormones endocrine, skin integumentary, lymph nodes lymphatic, bone skeletal, muscle muscular, thymus immune system.
But if you can show a pic i could try to answer it more specifically.