which of the following instances would you be most likely to write a compare-and-contrast essay?

A. when writing about the effects of high-fat and low-fat diets
B. when writing about why Great Britain was the birthplace of the Industrial Revolution
C. when writing a report on how to reduce air pollution
D. when writing a mystery story set in an abandoned hotel

A. when writing about the effects of high-fat and low-fat diets