Which action can best limit the transmission of pathogens by direct contacts

I would say washing your hands.

Explanation:

It depends on what pathogen is being transferred, but most contact with people is done through hands (handshakes, hugging, etc.), so washing hands constantly with anti-bacterial soap kills any germs that you may collect throughout the day.

obviously, the latter.

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.