Which statement is true?
a. lifestyle factors play a greater role than genes in disease development.
b. very little correlation exists between genes and disease.
c. chronic disease develops only in people with key genetic markers.
d. nearly all diseases have some genetic component.

The following statement is true: Nearly all diseases have some genetic component. Correct D Some diseases are  are caused by mutations in a single gene while others are more complex (like heart disease, type 2 diabetes, and obesity ) and are result of mutliple genes lifestle factors, envronmental factors...

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.