Option c is the correct answer.
Typically, a focus group should include <u>8–10</u> customers.
The definition of a customer is someone who purchases products or services at a store, restaurant, or another retail establishment. An example of a customer is someone who goes to an electronics store and buys a television. (informal) A person, especially a person, who interacts with others in some way.
No matter what industry you are in or what kind of products or services you sell, your customers are the most important part of your business. Without customers, there are no sales. Therefore, these are important factors in formulating the marketing message and strategy.
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Answer:
At different times
Explanation:
The echo returns at different times, but faster in water. This is because water particles are bound closer and this makes them transmit vibration energy from one particle to the next quickly. An echo is a sound wave and sound waves are longitudinal waves that occur by the collision of particles to move the vibrations along, and this is why they move slower in air.