The nervous system works
directly with the
system to
control the expanding
and contracting of our
lungs.
A. Excretory
B. Endocrine
C. Respiratory
D. Nervous

c. Respiratory

Explanation:

The reason why it’s respiratory is because in the question it says helps “control expanding the Lungs”= respiratory

C. respiratory

Explanation:

"Expanding and contracting of our lungs" is a clue that it has to do with our respiratory system.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.