The description that describes the activation energy role should be option D. where the reaction should provide sufficient energy.
Role of activation energy:
Chemical reactions required a specific energy amount for starting out of the working. The activation energy represent the minimum energy that needed for resulting the reaction to arise. Here the existing bond should broke and the new one should be developed. A reaction should only be proceed at the time when the products should be considered more stable as compared to the reactions.
Therefore, the option d is correct.
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