Final answer:
The opposite motion of pronation is supination, which is when the palms are turned to the palm forward position. An example of supination is scooping up soup with a spoon.
Step-by-step explanation:
The opposite motion of pronation, which is the rotation that turns the palms face down, is supination. When supination occurs, the palms are turned to the palm forward position, and the radius and ulna are parallel. An example of supination is when you scoop up soup with a spoon.