A normal distribution is best described as which of the following?

• A. True
• B. False
• C. It is always increasing
• D. It has exactly two modes

Answer: (A)

A normal distribution is characterized by a bell-shaped curve that is symmetric around its mean and has a single peak (one mode). This means the distribution rises to a maximum at the mean and then falls in a mirror-image fashion on either side. Because of this symmetry and unimodality, a statement about the normal distribution being described in a way that reflects these properties is true. It is not correct to say it is always increasing—after the mean it decreases—and it does not have exactly two modes, since it has only one mode at the mean. So the true option aligns with its symmetry and single peak, which are defining features of the normal distribution.