To be profitable and to grow, firms need a competitive advantage that is based on products or services that are valuable, rare, and difficult to imitate. Which of these examples is mostly likely to have a competitive advantage?

Multiple Choice

a cat$-$sitting service, where you take care of people's cats when they are on vacation

an independent book store that sells used books, knick$-$knacks

a souvenir shop in a beach town that sells dried sand dollars, jewelry made of shells, and tie$-$dyed shirts

a portrait$-$painting service by a very talented artist who is known for her ability to make all men look handsome and all women look beautiful