Which of the following properties of sound would be the most similar to the color (hue), of light?

According to the article Old Folks at Home, concerning the ability of older people to perform household tasks, a main effect found for the process scale but not found in the motor scale was for:

(a) age (b) task familiarity (c) task choice (d) task speed

The most frequent age of onset for schizophrenia is ______

a. the latency period b. right after puberty c. late adolescence or early adulthood d. mid-20s to early 30s