Final answer:
The gravitational attraction between two objects is affected by both the mass of the objects and the distance between them, which are directly and inversely proportional to the force, respectively. The correct answer is c. Both A and B, as the gravitational force is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Step-by-step explanation:
The factors affecting the gravitational attraction between two objects are the mass of the objects and the distance between them. The correct answer is c. Both A and B, as the gravitational force is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This is expressed in the universal law of gravitation, formulated by Sir Isaac Newton. For example, Essential Knowledge 1.C.2 emphasizes that gravitational mass is a property of an object determining the strength of gravitational interaction. Similarly, Essential Knowledge 3.C.1 states that gravitational force describes the interaction of objects with mass. Regarding the Cavendish experiment, it measured the gravitational constant and demonstrated that gravity can be measured even between objects of less mass, despite gravity being a very weak force.