The obesity rate has dramatically increased in the United States since 1900.This dramatic increase in obesity is likely due to all of the following,EXCEPT:
A)greater availability of food.
B)greater availability of energy-saving devices.
C)marked changes in the human genome.
D)declining physical activity.

Question

Quizplus · Accepted Answer

The marked changes in the human genome would not have occurred in the relatively short time period between 1900 and the present day, and therefore cannot explain the dramatic increase in obesity rates during this time period. The other answer choices are plausible explanations for the increase in obesity rates.

The Obesity Rate Has Dramatically Increased in the United States