Answer:
Sedimentary, metamorphic, and igneous
Explanation:
Rocks are classified into three groups, sedimentary, metamorphic, and igneous. The differences are how they are formed.
C is the most likely answer to this question.
There is no answer that is right except for C. Natural Selection.
Genetic Recombination doesn't change gene frequency;nor does migration. (Unless it's local)
Mutation could be the answer, but since mutations are too rare to really power Evolution, the only logical answer is Natural Selection.
A major result of the bank failures that followed the stock market crash in 1929 was that "<span>There wasn't enough money in circulation to support a healthy economy," since people had completely lost faith in the banking system.</span>