When did the last ice age begin to subside

About 13,000 years ago, more than three-fourths of the large Ice Age animals, including woolly mammoths, mastodons, saber-toothed tigers and giant bears, died out. Scientists have debated for years over the cause of the extinction, with both of the major hypotheses — human overhunting and climate change — insufficient to account for the mega die-off.

answer; i believe its (cpr);

the answer is c, all the other options are things they are known for.

hope this ☺️