What does patriarch mean?

a. a person who makes plans

b. a man who rules his family

c. a person who delivers news

d. a man who follows traditions

A patriarch is a man who rules the family - the correct answer is option b.

If a woman rules the family, she is called a matriarch.

The system in which the man rule the family is called Patriarchy and the system in which women rule the family is called Matriarchy.