I would say "c" because he might want to but maybe not its his choice
My opinion/answer: I think that you shouldn’t date older woman because it can lead to other things, plus it also depends how old are they like for example, (16 and 27) that is too old for me in my own opinions.
B. Solar power saves money for the user and makes the world a better place all around.
A is a personal opinion, C is not specific at al, D is factual, but it doesn't exactly make sense because though it helps the environment it doesn't really sustain our resources. Therefore B is the correct answer.
Sentence A's use of a semicolon is meant to show a connection between two different ideas. Sentence B's use of the colon is used to precede a list or explanation.
