Lamar's Friends Want Him to Come Out Partying with Them

Multiple Choice

Lamar's friends want him to come out partying with them tonight,but Lamar has a big test tomorrow that he knows he needs to study for.He decides not to join his friends and instead study for the test,knowing that his grades are important for his future.Lamar has demonstrated

A) that he is in the concrete operational stage of development.
B) the implications of an underdeveloped prefrontal cortex.
C) his ability to delay gratification.
D) the implications of a well-developed reward system in his limbic area.