Agroup of students are walking through the park and one of them takes a picture of a pollen grain that is being blown by the wind. what caption can the student use for the picture

The possible answers are :
a. gene mutation in action
b. gene flow at work
c. genetic drift as it happens
d. natural selection in progress

The correct answer is B.

When the wind is blowing a pollen grain away from the three, it's actively helping the gene flow between different individuals and populations of that plant. Gene flow helps to increase the variability in the populations.