A research ____ is a general plan for implementing the research strategy

Which of the following statements about problem solving in late adulthood is true?

A) Problem solving in the laboratory continues to increase in late adulthood. B) With age, major everyday concerns typically involve marital and parenting problems. C) Older adults are active and effective in solving important problems of everyday life. D) Older adults take longer than middle-aged adults to make decisions about whether they are ill.

Nicotine receptors interact with

a. Acetylcholine. b. Serotonin. c. Dopamine d. Glutamate