What is it called when a player steps over the baseline when serving?

A foot fault

Explanation:

A foot fault occurs when one player steps over, or on the baseline during a serve before making contact with the ball. Though difficult to call in some situations, any contact with the line at all is considered a foot fault, and will be called if observed.

does it have options?

hmmm

true, i think.

i checked and it seems the answer is, true.