When two objects interact, the change in momentum of the first object is the change in momentum of the second object.

a). equal to and opposite

b). less than and opposite

c). greater than and opposite

d). less than and in the same direction

e). greater than and n the same direction
*also, i'm in high school, and i don't know why it says middle school*

A. Equal to and Opposite

Explanation:

           when there is no External force acting on the system of bodies then Net momentum of the system is Conserved .

        Given that there are 2 bodies

         Let  P₁ as first object's momentum

                  P₂ as second object's momentum.

                  Total Momentum =P₁ + P₂

           As there is no external force acying on the system

                 Change in the Total momentum is zero

so,

                  0 = Δ P₁ + ΔP₂

                   ΔP₂ = -ΔP₁

                   negative sign indicates opposite direction.

                       Both are of equal magnitude.