An activity and communications program designed to build excitement in a market for a limited period of time in order to stimulate trial, increase consumer demand, or improve product availability is categorized as

sales promotion

Explanation:

Sales promotion -

It refers to the method of influence the consumers to buys certain goods and services , is referred to as sales promotion .

The method is adapted to increases the promotion of the product , which in turn will increase the sale and hence the profit margin of the company will increase .

The methods which helps sales promotions are - direct marketing , personal selling , advertising etc.

Hence , from the given information of the question ,

The correct answer is sales promotion.

answer; at prices that violate government price regulations;