Answer:
D
Step-by-step explanation:
The bargaining strength of suppliers is one of Porters five forces. The higher the bargaining power, the less attractive a segment is as companies would not have less power to negotiate prices for their supplies.
Bargaining power would be lower where there are less number of suppliers. This is the case with oil companies that have to purchase their oil from OPEC. They have no choice but to buy from OPEC. If OPEC increases oil prices, oil companies don't have the option of buying from another supplier