Owners of digital cameras have to buy memory cards in order to use the cameras. Cameras and memory cards are:
A. substitutes.
B. complements
C. unrelated.
D. elastic.
To determine whether cameras and memory cards are substitutes, complements, unrelated, or elastic, we need to understand the relationship between the two products.
Cameras and memory cards are generally used together. Memory cards are the storage medium that cameras use to store photos and videos. Without a memory card, a digital camera won't be able to retain the captured images.
Based on this information, we can conclude that cameras and memory cards are complements. Complementary goods are products that are typically used together or in conjunction with each other. In this case, the camera and memory card are complementary goods because they are used together to fulfill the camera's primary function of storing captured images.
Therefore, the correct answer is B. complements.