Jamal's father and grandmother are both diabetic. Jamal shows no signs of diabetes.

Which most likely explains why Jamal never suffers from diabetes even though he has the genes that can cause it?

He got the diabetes genes from his father.

He refrigerates his food so it will not spoil.

He lives in a city with good air quality.

He makes healthy lifestyle choices.

D

Explanation:

Process of Elimination:

A is incorrect; it suggests that he has diabetes

B is incorrect; the quality of his food doesnt affect his glucose levels

C is incorrect; air quality has no correlation to his glucose levels

D is correct; diabetes (type 2) is caused by unhealthy lifestyle, therefore we can assume he has a healthy lifestyle because he has no diabetes