The answer is: A. understand another person and his or her message more accurately
All people have their own unique perception in how they're observing the situation around them.
When observing one same situation, two people could completely have different approach that they would think would be best for that particular situation.
Perceptual skill is a skill that will help us understand people's perception. It teach us to take clues from the messages conveyed by other people to determine their personalities and the things that they would seen as valuable.