Concept:The minimum energy that reacting particles must possess for a collision to result in a chemical reaction is called activation energy.
Explanation:For a reaction to occur, particles must collide with sufficient energy.
This minimum required energy is known as activation energy.
It acts as an energy barrier that reacting particles must overcome.
Only collisions with energy equal to or greater than this value are effective.
Bond energy is the energy needed to break a specific bond.
Kinetic energy is energy possessed due to motion.
Potential energy is stored energy in a substance.
None of these terms describe the minimum energy needed to initiate a reaction.
Therefore, activation energy is the correct term.
Answer:A. activation energy