question 3 multiple choice the rate at which the u.s. population has developed dementia has greatly…

question 3 multiple choice the rate at which the u.s. population has developed dementia has greatly increased over the nations history. what is the most significant reason? rise in obesity decline in water quality exposure to artificial hormones lengthening lifespan
Answer
Brief Explanations:
As people age, the risk of developing dementia increases. A lengthening lifespan means more people are living to ages where dementia is more common. Obesity, water - quality decline, and exposure to artificial hormones may have health impacts but are not as directly related to the overall increase in dementia rates as the aging of the population due to a longer lifespan.
Answer:
D. lengthening lifespan