Answer:
D. increase slightly.
Step-by-step explanation:
If a small electric automobile manufacturer is able to gain the social return generated by its electric motor, it implies that the company can benefit from the positive externalities associated with the electric motor, such as environmental sustainability or reduced pollution. This can enhance the company's reputation, attract socially conscious investors, and potentially increase its market demand. As a result, the company's demand for financial capital is likely to increase slightly as it seeks additional funds to expand its operations and take advantage of the positive social return.