Final answer:
Cognitive mechanics may improve into old age, while cognitive pragmatics decline in late adulthood. Correct option is B.
Step-by-step explanation:
The statement that is true of cognitive mechanics and cognitive pragmatics is option B: Cognitive mechanics may improve into old age. Unlike physical abilities, which typically decline with age, cognitive abilities tend to remain steady or even improve until the late adulthood.
Specifically, our crystallized intelligence, which includes information, skills, and strategies acquired through experience, tends to remain stable or increase. In contrast, our fluid intelligence, which involves information processing abilities, reasoning, and memory, may decline in late adulthood. However, engaging in mentally and physically stimulating activities can help delay cognitive decline.