Question

Which of the following will not cause a change in the demand for coffee
(illustrated by a shift of the demand curve)?
(a) A decrease in the price of milk, a complement.
(b) An increase in the price of coffee.
(c) An increase in the number of people drinking coffee.
(d) An increase in the income of households.

Answer 1

Ur answer is c) an increase in the number of people drinking coffee because people who drinks coffee will drink the same demand although no. of people increase or decrease.

hope it helps..