Answer:
B. Content analysis is the research method that message system analysis relies on. Content analysis involves systematically analyzing and interpreting various forms of communication, such as texts, images, and videos, in order to identify patterns and themes. In message system analysis, the focus is on analyzing the messages that are being transmitted through a particular system, such as a media outlet, advertising campaign, or social media platform. By examining the content of these messages, researchers can gain insights into the values, beliefs, and attitudes that are being conveyed and how they may be influencing people's perceptions and behaviors.
Step-by-step explanation: