Which of the following statements about cognitive interventions is true?

A) Cognitive interventions are of limited usefulness to adults over age 65 because gains are rare.
B) Most older adults are unaware of memory declines and do not know they need to take extra steps to ensure recall.
C) Older adults' relatively well-preserved metacognition is a powerful asset in cognitive training efforts.
D) Cognitive interventions rarely result in improved day-to-day problem solving.

C