The one arrow that shows the wrong magnitude or direction Arrow B. Therefore , Arrow B is correct .
The other three arrows are correctly depicting the gravitational forces acting on the moon.
Arrow A represents the gravitational force exerted by the planet on the moon.
This force is directed towards the center of the planet and is the strongest of the three forces.
Arrow C represents the gravitational force exerted by the sun on the moon.
This force is much weaker than the force from the planet, but it is still significant.
Arrow D represents the tidal force exerted by the sun on the moon.
This force is caused by the fact that the sun's gravity pulls on the near side of the moon more strongly than it pulls on the far side of the moon.
This creates a net force that tries to stretch the moon out along the axis pointing towards the sun.
Arrow B is incorrect because it shows the gravitational force exerted by the moon on the planet.
This force is much weaker than the gravitational force exerted by the planet on the moon, and it is in the opposite direction.