The correct answer is (b.) men's. The men's shouts filled the dark night. If you are referring to many male persons, you may use men. You need not any usage of s with men since men is already in a plural form which makes it wrong.
Today's music tracks are meaningful not educational. Reason why, you could listen to it all day and it has a meaning behind those songs if you really dig into it.
Answer:
A, gives the reason how the games are helpful.
