The correct answer is option b. They receive instructions in their DNA.
The DNA (deoxyribonucleic acid) or the genes present in the cell guides the fate of the cells during the process of cellular differentiation in the embryonic life of the multicellular organism. The signaling molecule change the genetic expression changes, by which the cells are differentiated.
By keeping your skin hydrated, you can help keep the elastin that your skin needs to keep from scarring. Using topical creams such as coconut oil will keep your skin moisturized and make stretch marks less likely. Even without treatment, almost all stretch marks will fade over time.
