Weight is best descried as? a. the interval between two events b. a measure of gravitational force on an object c. the amount of matter in an object d. the amount of surface included within a set of boundaries

Weight is best described as:

B.a measure of gravitational force on an object.

Explanation:

The force with which an object is attracted by any celestial body is called   the weight of the body.Since, Force = Mass × Acceleration

           Weight= Mass × Acceleration due to Gravity(g)

The gravitational force exerted by a body greatly depends on the mass of the body.Greater the mass greater is the weight.Gravity of a body with Greater mass will be more therefore the weight of a body varies from place to place and on different celestial bodies.For example, The mass of the Earth is six times greater than the moon and thus a body  moon weighs one-sixth of its weight on Earth.

         Here the mass of the body is a constant quantity and thus the acceleration due to gravity differs.

From a high concentration to a low concentration.

Yes yes yes very good