14a. you may rent a movie or a video game for just one night if they are new.
14b. you may rent a movie or a video game for just one night if it is new.
i think this is one is also right, but, please make sure you check all of these with your teacher. every couple of days to see which one is doing better, or growing faster. make sure you history all of your results in your information so you will have a way to see if the music had any influence on the growth of the plant. 