Concept:Competitive demand refers to demand for substitute goods, where choosing one commodity excludes the other.
Explanation:In economics, when two commodities can satisfy the same want, a consumer must choose between them.
If the demand for one commodity prevents the demand for the other, the commodities are in competition with each other.
These goods are known as substitutes.
For example, a buyer who wants to purchase a detergent may decide to buy brand Omo or brand Sunlight, but not both at the same time.
Choosing Omo means the demand for Sunlight is excluded.
This relationship is called competitive demand.
It differs from complementary demand, where goods are consumed together, and from derived demand, which applies to factors of production.
Answer:B. Competitive demand.