biology evolution please help

Which of the following statements about evolution is true?
A) Evolution only results in the addition of traits to existing organisms.
B) Evolution only results in the loss of traits from existing organisms.
C) Evolution can result in the addition or loss of traits in existing organisms.
D) Evolution has nothing to do with the addition or loss of traits.
12.
The origin of numerous species of Galápagos finches from one original species is an example of
A) gene cascades.
B) mass extinctions.
C) adaptation and speciation.
D) genetic drift and emigration.