Answer:
c. Target return on investment (ROI)
Step-by-step explanation:
While deciding the price, they used the bottom-line profit. It means they decided the target profit which they require from this business and added cost in it to calculate the price to charge for desired profit.
This is termed as the Target return on Investment (ROI).
In this method of determining the price of the the profit rate remains the same because prices are based on the return rate.