Answer:
By asking the manager about the marginal cost.
Step-by-step explanation:
When a business wants to make profit it decides the production level that gives maximum revenue at lowest cost. that is, the business maximize profit and maximize revenue at a lower cost.
The manager should ask for the marginal cost of production, since t there will be a rise in average cost
A marginal cost can be defined as the extra cost incurred for producing an extra unit of a product.
To achieve maximize profit the manager needs to get a production level at which marginal cost is lowest at highest revenue,
Maximum profit = marginal cost (lowest at highest revenue)