The theory of reciprocal altruism explains altruistic helping behavior by noting that __________.
◦ altruistic behavior is a myth; by definition it cannot happen
◦ people may carry out altruistic acts with the expectation of being the recipient of altruism at some point in the future
◦ the compilation of many small acts of kindness adds up to a single act of altruism
◦ most people are willing to engage in altruistic behavior with no expectation of needing help themselves at some future point