Final answer:
The accurate description of the strategy is sampling, which involves providing free product samples to consumers to generate interest.
Step-by-step explanation:
The accurate description of the strategy described in the question is sampling.
Sampling is a marketing strategy that involves providing free product samples to consumers in order to generate interest and encourage them to purchase the product in the future. In this case, the new soft drink company targeted heavy Coke users with trial coupons, allowing them to try the new drink for free and potentially switch their preference to the new brand.
Sampling is commonly used in the beverage industry to introduce new products and compete with established brands like Coca-Cola and Pepsi Cola.