Nuclear proliferation is best described as a. the growth of world nuclear stockpiles b. the destructive capabilities of nuclear weapons c. an increase in the number of nuclear power plants d. the spread of nuclear weapons and technology

The "spread of nuclear weapons and technology" is known as Nuclear Proliferation.

Option D

Explanation:

Nuclear proliferation is described as the spread of weapons , fissionable material, and nations that are not recognized as "Nuclear Weapon States" by the Treaty is known as the "Non-Proliferation Treaty or NPT" of Nuclear Weapons.

Proliferation is opposed by many nations due to fear of arise in nuclear warfare with nuclear weapons. This leads to de-stabilization of international or regional relations, or infringe upon the national sovereignty of states.