Question

today, we can expect to live much more than... four times as long as our ancestors. five times as long as our ancestors. twice as long as our ancestors. three times as long as our ancestors.

Explanation:

Historically, human life expectancy has increased such that modern humans can expect to live about three times as long as many of their ancestors (e.g., in pre - modern eras with lower life expectancies due to various factors like healthcare, nutrition).

Answer:

D. three times as long as our ancestors.