Answer :

Final answer:

Genetic factors and diets containing animal products can raise LDL levels, while exercise can lower them.


Explanation:

Genetic factors and diets containing animal products can raise levels of LDL cholesterol in the blood. Exercise, on the other hand, can help lower LDL cholesterol levels. Therefore, the correct option is a and b only.


Learn more about LDL cholesterol here:

https://brainly.com/question/44259081