Which one of the following sentences is correctly punctuated?

a. smile when you say that, partner?
b. look up, look down, and look all around?
c. when will the winter end?
d. look at me, then say what you have to say?

The local school board would like to change the school calendar so that students are in school year round. do you think this is a good idea or a bad idea? to you see which side you want to defend answer this question from both angles.

Which important event occurred during the industrial and scientific revolutions

What happens to lovers when there are decreased levels of serotonin in the brain?