Which physical property allows a mixture of sand, rocks, and gravel to be separated by a sieve? Answer choices:

A:Size
B:Solubility
C:Shape
D:Magnetism

HELP PLEASE this is science not chemistry

answer; i believe the correct answer is (c) /// is a homogeneous mixture of gaseous substance nitrogen,oxygen and smaller amounts of other substancesmixtures can be either ( homogeneous or heterogeneous)plz check first good luck

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /