Which of the following is a commonly used prenatal diagnostic procedure?

Marcus is explaining Hans Selye's concept of stress to the class. He correctly states that the first stage of Selye's general adaptation syndrome is

a. resistance: a period of time when the body is physiologically activated and prepared to respond to the threat. b. alarm: the mobilization of the body in reaction to threat. c. exhaustion: the body's resources are depleted by chronic stress. d. homeostasis: : the body's tendency to return to a steady state of normal functioning.

While walking down a dark alley, you jump at a loud noise. This would not be considered learning because

a. it is not a behavior. b. jumping is only done for survival purposes. c. not everyone would jump in this situation. d. jumping is merely a reflex. e. jumping is a difficult skill, biologically speaking.