Answer:
Changing the perceived importance of attributes.
Explanation:
As consumers consider that the freshness is an issue, so the company added the freshness to its cans, also spent $25 million on the promotion as well as advertising, then on a survey, it is found that the 61% consumers, thought it is vital.
Therefore, It is an example of changing the perceived vital of attributes by adding the freshness dates on its cans, as the Cola faces the same issue.