What is the term for the use of more than one language?

Jamie doesn't worry very much about contracting HIV from unprotected sex, saying "I'm a good guy. It can't happen to me." This is an example of

a. an imaginary audience. b. a personal fable. c. an A not B error. d. hypothetical-deductive reasoning.

Early studies of brain tissue that used staining techniques and microscopes from the 19th century described the "nerve net." These early understandings were in error in the sense that the nerve net was believed to be

a. continuous. b. composed of discrete individual units. c. composed of cell bodies, axons, and dendrites. d. composed of neurotransmitters rather than neurons.