As many as __________ percent of elderly people have at least one major medical condition

On the average, parents and infants spend about ______ in face-to-face play daily

half an hour an hour two hours four hours

When you have to resolve your short-term personal desire for taking a long, hot shower with the long-term need of society to conserve water, community psychologists would say that you are dealing with

a) consciousness-raising. b) social action. c) the commons dilemma. d) the environmental dilemma.