Premature babies are especially likely to gain weight if stimulated by

A) sound and music.
B) light and colors.
C) touch and massage.
D) movement and acceleration.

Touch and massage have been found to be effective in promoting weight gain in premature babies. It has been shown that massages can lead to increased calorie intake, improved digestion, and enhanced sleep, all of which contribute to better weight gain in these infants. While sound and music, light and colors, and movement and acceleration may have other benefits for premature babies, they are not as strongly linked to weight gain as touch and massage.