Most moths of a particular population died when the chestnut blight fungus that they were dependent on got wiped out. but some moths did survive. which mechanism explains the reason for this?
a. gene flow
b. genetic drift
c. natural selection

The right answer for the question that is being asked and shown above is that: "b.Genetic drift." Most moths of a particular population died when the chestnut blight fungus that they were dependent on got wiped out. But some moths did survive. The mechanism explains the reason for this is that Genetic drift.

Resistance than a bicycle? i'm not entirely sure