relationships.One strength of the human condition is our tendency to give and receive support from one another under stressfulcircumstances. Social support consists of the exchange of resources among people based on their interpersonal tiesThose of us with strong support systems appear better able to cope with major life changes and daily hassles (　　).People with strong social ties live longer and have better health than those without such ties. Studies over a range oiilnesses, from depression to heart disease, reveal that the presence of social support helps people fend of (　　)illness, and the absence of such support makesPassage threeSince we are social beings, the quality of our lives depends in large measure on our interpersonal poor health more likely.Social support cushions stress in a number of ways. First, friends, relatives, and co-workers may letUs know thatthey value us. Our self-respect is strengthened when we feel accepted by others despite our faults and difficulties.Second, other people often provide us with informational support, They help us to define and understand ourproblems and find solutions to them. Third, we typically find social companionship supportive. Enaacing in leisure-time activities with others helps us to meet our social needs while at the same time distracting (　　) us fromour worries and troubles.Finally, other people may give us instrumental support--financial aid, material resources, andneeded services-that reduces stress by helping us resolve and cope with our problems.Interpersonal relationships are important because .
选项：

A: they
B: they
C: they
D: they