Answer:
Research and development (R&D) conducted by a company can be a positive externality. R&D increases the private profits of a company but also has the added benefit of increasing the general level of knowledge within a society. Similarly, the emphasis on education is also a positive externality.
Step-by-step explanation:
Choosing a beautiful design for a building will give benefits to everybody in society. Education or learning new skills. With better education, you are more productive and can gain more skills. But, also the rest of society benefits from your new skills