Answer: elastic
Explanation:
Elastic demand is a demand that occurs when the quantity demanded for a product or service results in a greater percentage change when there is a change in price.
For example, when there's a fall in price, this will lead to large change in quantity demanded for the good. Since there's an increase in the quantity demanded, it will lead to increase in revenue.
A, B, and C would best demonstrate the tasks.
Answer: measuring actual performance
Explanation: Measuring is the first step in the control cycle. Many employment and tasks can be expressed in concrete and observable terms.
Managers often use a number of information sources to assess actual performance, such as personal observations, statistical reports, oral reports, and written reports.
In the given case, Zachary is using a report that lacks relevance relative to the measurement criteria. Hence from the above we can conclude that the correct option is A.