Final answer:
The correct form of gustar to use is les gusta.
Step-by-step explanation:
To complete the sentences with an appropriate form of gustar and the correct pronoun, we need to consider the verb gustar, which means 'to like' in English. Based on the sentence, it is asking 'Do you all like renting a DVD?'. In this case, the correct form of gustar to use is les gusta, which means 'you all like' in English.
Learn more about Using gustar in Spanish sentences