The answer is A, diffusion
I think its the Diurnal Cycle.
<span>I belive the answer is D. Burbank's process did not involve environmental pressures to shape the outcome.
Burbank process is similar to natural selection because he will select the potato based on some traits. The trait would be big potato and resistant to disease. The genetic makeup will also favor those with the selected trait. This process should be faster.</span>