Final answer:
Dmitri Williams's op-ed primarily focuses on the importance of community and social interaction in virtual reality, explaining that technology should enhance such interactions to make virtual reality experiences successful.
Step-by-step explanation:
In Dmitri Williams's Los Angeles Times op-ed "Community is the Killer App' Missing from Virtual Reality," the primary focus of his argument is C) the importance of community and social interaction in virtual reality. The op-ed examines the crucial role that fostering communities plays in the effectiveness and appeal of virtual reality platforms. Williams highlights the idea that technology should support and enhance community interactions, especially at a distance, and that this social component is integral for the success of virtual reality experiences. The text elaborates on the role of technology in community psychology, emphasizing collaborative efforts and the need for investments in technological tools that enable long-distance partnership and community engagement without the necessity of physical presence.