_____ is the school of thought that rests on Charles Darwin's theory of adaptation for survival

The adulthood psychological adjustment achieved by Bruce-Brenda-David, the male twin whose penis was ablated during a botched circumcision procedure at age 7 months, suggests that

a. nature's impulse is to create a female. b. sexual identity may not be easily shifted by the upbringing of a child. c. regular injections of testosterone can shift sexual identity. d. genetic type is less important than are social factors. e. normal circumcision can alter sexual identity.

Which of these is a type of reliability?

a. test–retest b. predictive c. face d. convergent