When Jenny was 6, she would wake her parents up at 4:00 a.m. on her birthday to open her presents. Now that she is 15, she waits until everyone is up and has eaten breakfast before opening her presents. Jenny has developed __________.

A) a tolerance for frustration
B) self-control
C) delay mechanisms
D) control over her life

Frustration Tolerance

The ability of an individual to endure frustration, discomfort, or hardship without giving up, showing resilience in the face of obstacles.

Self-Control

The ability to pursue a goal while adequately managing internal conflicts about it, or to delay pursuing a goal because of other considerations or constraints.

Delay Mechanisms

Techniques or processes used to postpone or slow down an action or reaction.