I think the answer is sexual reproduction to carry out selective breeding.
Answer:
I think it isB
Explanation:
Because blood cells have genes than skin cells
<span> A chromatid is one half of a replicated chromosome, whereas a chromosome consists of DNA wrapped around proteins in a highly organized manner. </span>
I think the best answer would be culture. This is because all these aspects would motivate people going to the weight loss canter as well as health club in an attempt to live responsibly and healthy. In turn this would promote the business of those who own the centers as many individuals have adopted those aspects.