Which stage of childbirth usually takes the longest amount of time?

which stage of childbirth usually takes the least amount of time?

answer; /// i believe the correct answer is (achilles tendon)(c)

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.