With Regard to Fluid and Crystallized Intelligence, Research Has Concluded

Multiple Choice

With regard to fluid and crystallized intelligence, research has concluded that

A) both fluid and crystallized intelligence appear to decline with age
B) both fluid and crystallized intelligence increase or remain stable well into late adulthood
C) fluid intelligence improves or remains stable with age but crystallized intelligence appears to decline in late adulthood
D) crystallized intelligence improves or remains stable with age but fluid intelligence appears to decline in late adulthood