In 2000, Tish Cirovolo Realized That There Were No Guitars

In 2000, Tish Cirovolo realized that there were no guitars on the market made specifically for women. As a result, she started Daisy Rock Guitars, a company that makes guitars just for women. Daisy Rock Guitars are stylish and come in feminine colors, and incorporate design features that accommodate a woman's smaller hand and build. The best way to describe how Cirovolo's business idea was recognized is ________.

A) brainstorming
B) talking to consumers
C) reading industry reports
D) observing trends
E) finding a gap in the marketplace