Final answer:
Entrepreneurs require risk-taking, innovation, and resilience to be successful, and these characteristics can be exhibited to the extreme.
Step-by-step explanation:
The characteristic(s) that propel entrepreneurs into success and can be exhibited to the extreme include risk-taking, innovation, and resilience. An entrepreneur must be willing to take risks in order to start and manage a new business. This involves the potential for failure, but also the opportunity for significant rewards such as monetary success and the introduction of new or improved products into the market. Innovation plays a critical role as entrepreneurs come up with novel products or improve existing ones for the marketplace. Lastly, resilience is essential for entrepreneurs to withstand the inevitable setbacks and persevere in the face of challenges. Hence, the correct answer is d) All of the above.