Final answer:
Ethan and Christine's discussion about their math homework is an example of interpersonal communication, which involves the exchange of information between two or more people through face-to-face interaction and verbal/nonverbal cues.
d is correct
Step-by-step explanation:
Ethan and Christine's discussion about last week's math homework is an example of interpersonal communication. Interpersonal communication refers to the exchange of information between two or more people, and it involves face-to-face interaction and the use of verbal and nonverbal cues.
Unlike mass communication, which involves the transmission of messages to a large audience through mass media, interpersonal communication is more personal and direct. It allows individuals to engage in a conversation, express their thoughts, ask questions, and receive immediate feedback.
Other forms of communication mentioned in the question, such as intrapersonal communication and computer-mediated communication, are not applicable in this context. Intrapersonal communication refers to self-talk or internal dialogue within an individual's mind, while computer-mediated communication involves communication through digital platforms like emails or social media.