Mr Mariebb Learns from One of His Students That in His

Mr. Mariebb learns from one of his students that in his family birthdays are a time of big celebration. His parents have a party and his extended family all comes into town to celebrate. In this scenario, what Mr. Mariebb's student is discussing is which of the following?

A) A cultural example
B) An individualism example
C) A collectivist example
D) Intelligence quotients