Final answer:
To calculate the total revenue from the sale to the large buyer, we need to know the quantity of bird feeders ordered by the buyer.
Step-by-step explanation:
To calculate the total revenue from the sale to the large buyer, we need to know the quantity of bird feeders ordered by the buyer (option a). Total revenue can be calculated by multiplying the selling price per bird feeder to the large buyer by the quantity of bird feeders ordered.