Which factor is most important in determining which minerals will form in a rock?
a) the size of the rock.
b) the weight of the rock.
c) the hardness of the rock.
d) the composition of the rock.

The answer for this question is: The factor that is MOST important in determining which minerals will form in a rock D) The composition of the rock. This is because minerals actually exist as different chemical compounds. By knowing the chemical compounds present in a rock, you can find out what type of mineral is present as well. 

Its D.

Explanation:

I just took a usatestprep on it and it had the same question.

ee

Explanation:

If free earlobes are dominant that means it must be EE or Ee, for it to be recessive it must be ee