The amount of kinetic energy an object has depends on its.
motion
position
gravity
height

The correct answer is Motion.

Explanation:

The energy which is possessed by the virtue of its motion is known as kinetic energy.

The energy which is possessed by the virtue of its position is known as potential energy.

The energy which is possessed by the virtue of gravity is known as gravitational energy.

The energy which is possessed by the virtue of height is known as gravitational potential energy.

Hence, the amount of kinetic energy of an object depends on its motion.

answer is a

explanation:

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.