Short-term price reductions like two-for-one commonly used to increase trial among potential customers or to retaliate against a competitor's actions are referred to as a

Deal

Explanation:

The deal is the business term that is done between any two persons in order to generate the benefit for both the parties

Here in the question, the two for one rise the trial between the future customers or its is against the actions of a competitor

Just as example = short term price reductions

It benefits for both the parties i..e for the buyer it gets in less price and for selling one product is sold and get some margin on it

Therefore it is a deal situation

answer; be sure that the information on file is correct;

answer(b) gdp is not affected by

scott's production of the jewelry box;