Lettie is underweight and has insulin injections. Which one of the following is her most likely

Research on social roles suggests that ________

a. people usually follow social roles with conscious deliberation. b. certain aspects of every role must be carried out or there will almost always be penalties. c. male gender roles in Western cultures have been resistant to any changes. d. social roles are fairly independent of culture.

The results of twin studies provide evidence that heredity does not influence temperament

Indicate whether the statement is true or false