An example of a physiological need is .
a movie
food
a music download

The correct answer is: Food.

A physiological need is a biological requirement for human survival. This means that if you can't have acces to it you will get sick or dye. In this case food is necessary for living, there is no scenario in which a human won't need food to survive. These are the mos important needs of all.

The other two options are cataloged in economics as wants. This means goods or devices that are not necessary but we still want them. In this case a movie and music download are not essential for living but they entertain us.

A human can renounce to this wants but not to a physiological need.