Answer:
The correct answer is letter "D": there are few substitutes for the product and the demand for the product is relatively inelastic.
Step-by-step explanation:
Broad markets are those offering products that are not easy to substitute. Electricity is an example of a service that is not easy to substitute. Most narrow markets are monopolies, thus, they are characterized by having an inelastic demand meaning their quantity demanded does not change in front of changes in prices.