What is it called when the presence of two diffrent alleles results in an intermediate phenotype?

Question

please help right now

a)incomplete dominance

b)polygenic inheritance

c)multiple alleles

d)pedigrees

Answer 1

incomplete dominance

Answer 2

A!

Answer 3

It's A. Incomplete dominance. Take for example a red and a white flower. These two flowers would reproduce and might make a pink flower or a white and red mixed flower. Another example, I believe, would be something like red hair. Hope this helps you understand it.