Psychologist Kirk Erickson and Colleagues Designed an Experiment to Test

Multiple Choice

Psychologist Kirk Erickson and colleagues designed an experiment to test whether aerobic exercise could improve brain health and cognitive functioning in older adults who were sedentary but in good physical health. Which of the following statements is NOT a conclusion that can be drawn from the study's findings?

A) Even in late adulthood, behavioral interventions can affect brain structure.
B) Aerobic exercise helps keep the brain healthy and may protect brain tissue from age-related deterioration.
C) A sedentary lifestyle has no effect on brain health as long as people exercise in late adulthood.
D) A very moderate, simple exercise program can significantly improve cognitive abilities and brain health.