Answer to Question 1
D
Productive aging means development of attitudes and skills that prepare an individual to adapt to the transitions of life and maintain a personal sense of experiencing a productive, meaningful life. It is not necessarily related to having children, job productivity, or levels of activity and health. Productive aging means adapting definitions of success at each stage of the aging process.
Answer to Question 2
2
Rationale: Fat catabolism occurs when the body can't use or lacks a supply of glucose for energy and results in weight loss. Protein catabolism also occurs under the same circumstances, but in this case, skeletal muscle is broken down and the resulting amino acids are used to meet energy needs. Glucose metabolism is the preferred energy source for the body, but depends on an adequate supply of carbohydrates and insulin. Ketones are a by-product of fat catabolism and are eliminated by the kidneys, not metabolized in the body.