The corn we eat today is larger and has more
kernels than the corn people first grew thousands
of years ago. which process is most likely
responsible for the changes that have occurred?
(1) mitosis (3) direct harvesting
(2) succession (4) selective breeding

The question says, the corn we eat today is larger and has more kernels than the corn people first grew thousands of years ago. Which process is most likely responsible for the changes that have occurred. The correct option is 'succession'. Succession is the process by which change occur in the composition, structure or architecture of a specie over a period of time.