The entire market demand in an industry represents the horizontal summation of individual demand curves.
What is market demand?
- It is the total amount of goods and services demanded in a market.
- It's demand curve is the sum of all the individual demand curves in the market.
Market demand is the sum of the demand of every individual in the market and so the market demand curve is also the sum of every individual demand curve.
In conclusion, option D is correct.
Find out more on market demand at https://brainly.com/question/3331860.
