After taking a psychoactive drug for many years, Carl stops taking it. He finds withdrawal to be physically painful, because because the drug he had been taking caused his brain to stop producing its own endorphins. Which drug was he taking

Based on what you read in the fact sheet, identify the type of customer the company is hoping to reach. super-phonic systems wants to sell phones to customers who: expect the latest smartphone technology. need affordable phone service in remote areas. care more about attractive designs than reliability. will pay top prices for features such as web-surfing.