The best solution in one where the solution is being made strictly on the basis of "pros and cons" would be to pick the solution where the pros, outweigh the consequences. In other words pick a solution with more pros than cons.
Answer:
Yes every cell undergoes mitosis
The most positive thing about having a role model would be having an influence. If you have a positive role model that you have a positive influence that could, in turn, improve your own lifestyle.