In the final stage of team problem solving, it is important to O identify potential problems
O make sure team members understand their role
O seek opinions on options
discuss and decide upon a plan

The answer is “discuss and decide upon a plan”

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

The answer is d because , safety almost always works, to prevent stds and pregnancy