Read the paragraph below, adapted from a psychology textbook.
To investigate the role played by personal relationships in stress and health, psychologists measure the level of social support—the resources provided by other people in times of need (Hobfoll & Stephens, 1990). Repeatedly, researchers have found that socially isolated people have poorer health and higher death rates than people who have many social contacts or relationships (Southwick & others, 2005; Uchino & others, 1996). In fact, social isolation seems to be just as potent a health risk as smoking, high blood cholesterol, obesity or physical inactivity (Cohen & others, 2000).
According to the passage, which of the following is the best definition of social support?
A. online networks such as Facebook
B. poor health
C. solitary meditation
D. resources provided by others in times of need
