Which function of language does Halliday identify as used to express personal views and preferences?

The function of language that Halliday identifies as expressing personal views and preferences is the personal function. This aspect of language is particularly important because it enables individuals to convey their feelings, opinions, and personal identity, allowing for the expression of individuality and personal experience. Through the personal function, a speaker can communicate what they like, dislike, or believe, fostering connections with others based on these expressions.

In contrast, the regulatory function primarily focuses on controlling the behavior of others and setting rules or guidelines. The imaginative function relates to the creative use of language, such as storytelling or play, while the heuristic function involves using language to explore and learn about the world. Each of these serves distinct purposes in communication, but the personal function is specifically tied to articulating individual perspective and preference.