Which of the following statements best describes the altithermal period?
a.
it was known as the little ice age.
b.
grasslands replaced forests in the north and east.
c.
temperatures dropped and megafauna thrived.
d.
glaciers began to melt and ocean levels rose.

The answer to this question would be letter “D. Glaciers began to melt and ocean levels rose “

Also called as Climactic Optimum, this period represents the warmest time within the Holocene when global temperatures may have been as much as 4 degrees Celsius higher than today.

The correct answer is D. During the altithermal period, glaciers began to melt and ocean levels rose.

Explanation:

The Altithermal Period, also known as Maximum Holocene Climate was a warm period during the interval of approximately 9 to 5 millennia before the present.

The Altithermal Period consisted of an increase of 4°C near the North Pole, North-Western Europe experienced warming while it was cooling in the South, the change in mean temperatute seems to have diminished rapidly with the latitude so that essentially no change in the mean temperature was reported at low and middle latitudes.

This event led to the melting of the glaciers of the North Pole, with the consequent rise in sea level. In addition, rainfall increased, which also increased the number of forested areas.

d) all choices are correct