Why the author was not sure if he would be able to survive 150 thousand years ago?
A.
Because he was chased by his prey.
B.
Because sport was the key to survive at that time while the authour was not a sporty guy.
C.
because he would now be the guy carrying the killed prey, while the others, the ones who run faster, would be the ones hunting the prey.
D.
because he is not running as fast as he used to.