While Playing "Words with Friends" with Her 72-Year-Old Grandmother, Frieda

While playing "Words with Friends" with her 72-year-old grandmother, Frieda Lay is shocked to find that she is losing badly because her grandmother just seems to know so many more words. Frieda's grandmother is illustrating the fact that:

A) older adults are superior to younger adults in inductive reasoning.
B) later life is associated with much faster response speed.
C) secondary abilities improve but primary abilities decline in later life.
D) crystallized intelligence rises throughout adulthood into the 70s.