The question has Statement I and Statement 2.  Of the four choices given after the Statements, choose the one that best describes the two Statements.

Statement 1: If you push on a cart being pulled by a horse so that it does not move, the cart pushes you back with an equal and opposite force.

Statement 2: The cart does not move because the force described in statement I cancel each other.

If  you push a cart with some force then according to newton third law the cart will exert  an equal and opposite force on you.  Sot the cart push you with wame amount of force in  opposite direction.  So Statement I is correct.  The action reaction pairs mentioned in  statement one cannot cancel each other because action and reaction forces act on two  different bodies.  Sp tjeu cammpt camce; each other.  So Statement 2 is wrong.