Find total marbles:
2 + 3 + 5 = 10
A. There are 2 red, so probability of picking red would be 2 out of 10 which would be 2/5. So A is false.
B. 3 blue + 5 green = 8 marbles. Probability of picking blue or green would be 8 out of 10 which would be 4/5 so B is false.
C. Picking green would be 5 out of 10 which would be 1/2 so c is true.
D. Picking not red would be picking green or blue which is the same as B. Which is 4/5 so D. Is true.
E. Since half the marbles are green and half the marbles are not green this one is also true.
The possibilities are C, D, and E