I will wait until you finish.
Finished is a <u>p</u><u>a</u><u>s</u><u>t</u><u> </u><u>t</u><u>e</u><u>n</u><u>s</u><u>e</u><u> </u> so its wrong!.
Answer:
I guess answer is finish
finish honestly these both sound like something i would say
C
Explanation:
that don't need a lot of water
Relative clauses often begin with "that"