Which of the following does not affect a molecules ability to cross a cell membrane? (WILL MARK BRAINLIEST PLEASE HELP ;_;

A. Polarity of the molecule

B. Concentration inside and outside of the cell

C. Size of the molecule

D. Energy of the cell

10 points a population of mice have tails. over time those mice with either really short tails or really long tails have a higher rate of survival. this will probably lead to what type of selection? a. disruptiveb. directionalc. stabilizingd. evological