The "Man the Hunter, Woman the Gatherer" tale lies at the heart of U. S. gender ideologies. Anthropologists work to identify scientifically validated truths about the human past. Identify the following statements as based in fiction or science. a. Our human ancestors had rigid gender roles because they lived on the edge of starvation and needed strict roles in order to secure food. b. The pleasure of killing animals developed a hardwired aggression in men that we still see today. c. Our human ancestors likely had flexible gender roles that shifted in response to the needs of a given situation. d. Women today are more nurturing than men because of women's gathering skills developed in the evolutionary past.