The answer that best completes the sentence is mira.
Donde mira Manolo la television?
Miro is used for I.
Miras is used for you.
Miran is used for plural.
And since Manolo is third person singular (he), you need to use mira.
Answer:
usted
Explanation:
usted is more formal. if not certain which to use, use usted instead of tú considering its better to be more formal than less formal.