What is intercultural comtence?

Intercultural competence is defined in a number of ways* but generally, it is the ability to communicate and behave in appropriate ways with those who are culturally different—and to co-create shared spaces, teams, and organizations that are inclusive, effective, innovative, and satisfying.

the sentence that contains a restrictive clause is a.they decided to meet where the band was performing

explanation:

a restrictive clause is also known as an essential clause

i think it may be b, i'm not exactly too sure on this. but b seems to make more sense.