Answer:
C) When I win the lottery, I will donate half of it to charity.
Explanation:
THe subjunctive mood in english and other languages is expressed whn the person is talking about a desire, a wish or a hypothetical situation in which he is involved, from the options the only one that expresses a hypothetical situation in which the person is involved would be C), becaus it expresses a hypothetical situation that the author does not have control of.
