And if/else statement - I am confused

Hallo guys

Just signed up for the forum, cool place man why didn't i do this in the beginning of my Computer Science Class ?

Anyway, i have a problem set due tommorow, and i am almost done, but there is one question which tricks me. I really don't know anything about these if/else statements. We er just stopped creating movies with mostly Methods, and now moving to make games where we are beginning to learn about functions and stuff - so i am not to much into Java and all.

Anyway hope you guys can explain me what this question is about

1. A conditional expression in an If/Else statement must evaluate to what type of value? Why?