Explaining why the best work of scientists is often produced in early adulthood while that of novelists often originates during middle adulthood requires a distinction between: a. initiative and generativity.
b. concrete and formal operations.
c. fluid and crystallized intelligence.
d. conventional and postconventional morality.

Fluid and crystallized intelligence.

Explanation:

Fluid intellect refers to the capacity to reason and to different groups. Crystallized wisdom refers to the synthesis of experience, information and skills that have been gained during life.

Crystallized knowledge is the capacity to use information that has already been learned by schooling and experience. Fluid intelligence decreases with age, whereas crystallized intelligence is retained or enhanced.

50% because no one is smart enough to relize that money makes the world go round and 99% of the earth hates donald trump the other 1% is the republicans go figure right

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.