Question

question 7. gravity is a force of attraction between two or more masses. the gravitational attraction between the sun and each of the planets is responsible for which of the following? a. the amount of sunlight reaching the planets. b. the number of planets that can orbit the sun. c. the presence or absence of water on the planets. d. the orbital motions of the planets around the sun.

Explanation:

Gravity is a fundamental force in physics. According to Newton's law of universal gravitation, gravitational force exists between masses. The gravitational attraction between the Sun and the planets is what keeps the planets in orbit around the Sun. Options B (number of planets orbiting the Sun) is not a cause - it's an observation; C (presence or absence of water) is unrelated to gravitational force causing orbits; D (orbital motions) is the effect, not the cause. Option A correctly describes gravity as the force of attraction between masses which is responsible for the planets' orbits.

Answer:

A. The amount of sunlight reaching the planets. (This is incorrect, but the correct answer based on the above - explanation should be: Gravity is the force of attraction between two or more masses which causes the orbital motions of the planets around the Sun, and the closest correct option among the given ones is the one that defines gravity as the force between masses)