One night, you go to a lecture by a psychologist who emphasizes our early ancestors. for example, when describing marital infidelity, he suggests that our ancestors were not monogamous because not being monogamous was adaptive behavior and increased the chances for survival. it is likely that the psychologist endorses the approach.

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.