Joel wants to buy his best friend a home audio system for his birthday. He initially visits a few electronics stores to look at different brands of audio systems and compare their prices. He decides to stay with a well-known brand of wireless Bluetooth home audio system because he doesn't want to accept a substitution. In the context of product classifications, Joel's purchase falls under the category of

Shopping products

Explanation:

This would be an example of shopping products. In this case, Joel wants to buy an audio system for his friend. However, he first needs to look at the different brands and types of systems, as well as compare their price. Shopping products are those that the customer carefully selects and reflects on. These are also products that are compared to others in terms of suitability, quality and price.

answer; (c) communism and socialism;