Final answer:
Focused approaches to corporate entrepreneurship include business incubators, product champions, and new venture groups, whereas supplier groups are not considered a focused approach. Option B,C,D is correct.
Step-by-step explanation:
The focused approaches to corporate entrepreneurship are business incubators, product champions, and new venture groups. These focus specifically on fostering innovation within a corporation, either by developing new ideas, products, or services, or by creating a supportive environment for entrepreneurial endeavors.
Business incubators provide resources and support to nurture young companies, helping them to grow and succeed. Product champions are individuals who take the lead in pushing an idea or a project forward within the company, overcoming obstacles and garnering support from other stakeholders.
New venture groups are teams within a corporation that operate semi-autonomously to develop new businesses or products separate from the core operations of the company. Supplier groups, although important for business operations, are not considered a focused approach to corporate entrepreneurship as they don't directly engage with the internal innovation processes.