I think the answer is psychological progection
In my Health class the components were Cardio (running, biking), Muscular strength (max bench, max squat), Muscular Endurance (max reps of pull ups, push up), Flexibility (sit and reach), and Motor Skills (stork stand)
Definition:
A research problem is a statement about an area of concern, a condition to be improved, a difficulty to be eliminated, or a troubling question that exists in scholarly literature, in theory, or in practice that points to the need for meaningful understanding and deliberate investigation.
Oxygen is taken into the lungs.
