Final answer:
The correct option is B). The excerpt mentioning Noa Mintz provides a clear example of using personal strengths to address a widely recognized societal need in entrepreneurship.
Step-by-step explanation:
The excerpt that uses valid reasoning to support the argument that teen entrepreneurs should consider their personal strengths and society's needs when defining a problem is: "Noa Mintz identified a challenge many families face in finding quality childcare and used her knowledge of matchmaking to create a solution that addressed that problem." This example illustrates the importance of recognizing a societal problem that affects a significant number of people and using personal strengths to devise a solution that aligns with those needs.