Which of the following popularized the concept of "the tragedy of the commons"?

Studies of the perceptual capabilities of infants using the visual cliff have determined that children

a. are reluctant to crawl across either the shallow or deep ends of the apparatus. b. are equally likely to crawl across the shallow and deep ends of the apparatus. c. will only venture out on the deep end if they can crawl. d. will avoid the deep end if they have experienced crawling.

Elisabeth attended a concert with her dad and proceeded to stand on the chair and scream for the band. Although her father tried to get her down twice, Elisabeth refused

A security guard asked her once and she complied, behaving for the rest of the concert. Which principle of compliance was at work here? a. commitment b. authority c. reciprocity d. liking