Answer:
Sea levels during the ice age were higher than today is not true concerning the Pleistocene ice age.
Step-by-step explanation:
The Pleistocene ice age was a period of repeated glaciations that occurred from about 2.6 million to 11,700 years ago. During this time, large ice sheets covered much of North America, Europe, and Asia, and sea levels were much lower than they are today.
Option A is true, as Earth began warming out of the ice age about 18,000 years ago, marking the end of the last glacial period and the beginning of the current interglacial period.
Option B is true, as the glaciers stopped advancing about 15,000 years ago, although some small glaciers still exist today.
Option D is true, as forests and grasslands became more common after the ice age, as the climate warmed and the glaciers retreated.
Option C is not true, as sea levels during the Pleistocene ice age were actually lower than they are today, due to the amount of water that was locked up in the continental ice sheets. As the glaciers melted and the water returned to the oceans, sea levels began to rise, eventually reaching their current levels.