On Saturday Night, Nasir's Friends Invited Him to Go See

On Saturday night, Nasir's friends invited him to go see the movie that he had been talking about for the last few weeks. Unfortunately, he had to work all day Sunday, and he had a test on Monday that he needed to study for. Although Nasir really wanted to go with them, he politely declined and instead stayed in to study. In doing so, Nasir demonstrated

A) priority management.
B) self-regard.
C) resilience.
D) social responsibility.