Earth's gravity attempts to change the velocity of all objects on earth's surface toward at a rate of 9.8 meters per seconds squared. outer space the sun the horizon the center of the earth

The option is 'the center of the earth.'

Explanation:

Gravity of the earth is defined as the the force of attraction exerted by the planet earth on the objects to attract them towards the center of the earth.

The value of the acceleration by which is velocity of freely falling object changes in the earth's atmosphere is .

This force tends to attract the object towards the center of the earth.

From the given options the apt option is 'the center of the earth.'

d. platinum would have the greatest temperature increase because it has the lowest specific heat.