Who had authority over all the members
of a Roman family?

paterfamilias

Explanation:

At the head of Roman family life was the oldest living male, called the "paterfamilias," or "father of the family." He looked after the family's business affairs and property and could perform religious rites on their behalf. The paterfamilias had absolute rule over his household and children.

pater familias

Explanation:

it is c that's right I pretty sure