Chromosome pairs begin lining up in the middle of a dividing cell during:
metaphase
prophase
anaphase
telophase

risky behaviors. many behaviors are risky for your health and happiness. the main hazards include using tobacco, alcohol, and sexual activity.

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.