PLS HELP ASAP THIS TEST IS DUE IN A FEW MINUTES!! which of the following describes an action-reaction pair?

a. earth's gravity pulls down on you, and your gravity pulls up on earth
b. you push a car forward, and the car pulls you forward.
c. friction slows you down, and the normal force holds you up.
d. your hat pushes down on your head, and your feet push down on the ground.

a

Explanation:

an action reaction pair is an action and the reaction of the other part and so they're technically opposites,  a makes the most sense

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.