Researchers have found that elderly people who actively participate in religious services or pray experience:

	a.	lower rates of depression but no change in overall health than those who don't participate in such activities.
	b.	a shift from an internal locus of control to an external locus of control.
	c.	improved health and noticeably lower rates of depression than those who don't participate in such activities.
	d.	improved health but no difference in mood than those who don't participate in such activities.