Multiple Choice
Which of the following statements is TRUE?
A) Both crystallized and fluid intelligence remain relatively stable across the life span.
B) While crystallized intelligence remains relatively stable across the life span, fluid intelligence begins to decline in the twenties.
C) While fluid intelligence remains relatively stable across the life span, crystallized intelligence begins to decline in the twenties.
D) Both crystallized and fluid intelligence begin to decline in the twenties.
Correct Answer:

Verified
Correct Answer:
Verified
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