Answer:
Planet A = planet B > planet D > planet A = planet E
Step-by-step explanation:
Gravitational force obeys the inverse square law. That is,
Gravitation force F is inversely proportional to the square of the distance between the two masses.
The larger the distance, the weaker the gravitational force F.
From largest to smallest, the rank of gravitational force that each planet exerts on the star with mass M. Distances are as follows:
Planet B, planet C, planet D, planet planet A, planet E.
Planet B and C may experience different the same gravitational force depending on their masses. This is also applicable to planet A and E.
Therefore,
Planet A = planet B > planet D > planet A = planet E