Studies Examining Programs Designed to Increase Self-Efficacy in Response to Threat

Studies examining programs designed to increase self-efficacy in response to threat and stress show that the body's immune function first begins to improve

A) When people try to build up self-efficacy in the face of threat
B) After increases of self-efficacy have been shown to occur
C) Only after increases in self-efficacy have been sustained for two months
D) A year after participants first attempt to increase their self-efficacy