Answer:
A short-term activity that enhances or supports other IMC variables
Step-by-step explanation:
Sales promotion is considered to be the short-term incentive for a trial that to be started or the purchase. It is the element of the promotional mix. It add the value or the incentive to the consumers, wholesalers etc in order to stimulate the instant sales
So as per the given situation, the first option is correct as it to be considered as the short term activity that support the variable of IMC