Answer:
Market Development
Step-by-step explanation:
The company has not change their product, which they want to sell their ultimate buyer. Instead they only wish to focus on a single market segment. In this case that market segment consists of senior citizens.
Moreover, the strategy requires to persuade the non buyer (senior citizens) to buy the product by providing them services (in this case free express delivery) which would encourage them to make the decision of buying pizza from Presto Pizza.