Answer:
d. the action produces marginal benefits that exceed marginal costs.
Step-by-step explanation:
The rational person is the person who takes the decision with keeping in mind about its future events and in practicable in nature instead of the emotional nature
When a company earns a net income, its revenue is more than its cost
So a rational person does not act unless when the action generates the marginal benefits that are exceeded from the marginal cost.