Answer:
The correct answer would be option C.
Incomplete dominance is a type of allelic interaction in which neither of the alleles is able to complete dominance over the another.
It results in the blending of the two phenotypes.
For example, a cross between red and white flower plants results in the production of pink flower plant, that is, blending of red and white phenotype.
Similarly, hair type also shows the same type of inheritance in which the blending of curly and straight hair results in wavy hairs.
The same is explained below the help of Punnett square.