True Vibgyor Inc. sells its e-book readers at the cost price of $15 each. However, the company makes its profits when users have to download or buy books online. Which of the following business models is True Vibgyor implementing?A) Pay-as-you-go
B) Subscription-based
C) Direct sales
D) Razor-razor-blade

D.  Razor -Razor -blade

Explanation:

A razor - razor blade business model is a type of business model that involves selling a particular product at a low price in increase sales of complementary goods. It refers to  the sales of a core product of a firm at a low price with the expectation that consumer will purchase the more expensive dependent products.

True Vibgyor selling its e-book readers at a $15 and anticipating that the firm will make its profit when the customers buy or download books online is an example of a Razor - razor blade business model.

Hence the answer is    D.  Razor -Razor -blade

yes the correct answer was

b.the increased supply will create a surplus.    

answer: in the short-run firms will respond by raising the price of turkey.

explanation: initially the long-run equilibrium is at a price of $5 per pound of turkey and a quantity of 50 million pounds per year. now, when webmd claims that a protein found in turkey will increase your expected lifespan by 4 years. the consumers demand for turkey will increase at every price shifting the demand curve to the right from d1 to d2. while, there will be no change in the supply curve in the short-run as it is not possible for producers to adjust supply so quickly. as a result the new equilibrium will occur at a higher price and a higher quantity of turkey.

thus, in the short run firms will respond by increasing the price of turkey, selling more quantity at a higher price and earning economic profits.