Practicing habits can lower your risk for many diseases such as diabetes, asthma, and heart disease
a. sedentary
b. healthy dietary
c. addictive

Explanation:

Healthy dietary is the right choice here, because having one you can lower many risks, like common diseases as diabetes or heart disease, which are chronicle by the way. That's why is really important to develop and maintain healthy dietary habits, because food can be a perfect source to keep our body strong, but food also can be a destroyer of our health, so we (with habits) are the most important ingredients to live a healthy life.

yes, it is pretty much the same thing, which is cool. : )