Answer:
C
Explanation:
Equivalent means equal.
For A: 3x + 2y and 3(x + 2y) are not equivalent because if you distribute 3 in the second expression then it'll be 3x + 6y which is not equal to 3x + 2y
For B: 32 + 16y and 8(4 + 16y) Again if you distribute the 8 in the second expression it won't be equal to the first one
For D: -2(x - y) and -2x - 2y are not equivalent because when you distribute the -2 with the -y in the first expression then it will be 2y not -2y
C is the only option that makes sense.