Final answer:
Longitudinal research involves following the same group of individuals over a long period of time and measuring them at different ages.
Step-by-step explanation:
The false statement regarding longitudinal research on aging is B: It compares adults of different ages at one point in time.
Longitudinal research involves following the same group of individuals over a long period of time and measuring them at several different ages. It allows researchers to observe how people change and develop over time.
Cross-sectional research, on the other hand, compares adults of different ages at one point in time, as mentioned in the provided information. Therefore, statement B is the false one.