Which of the following options does Khan Academy provide?

Khan Academy is well-known for its extensive use of video-based instruction. This approach is highly effective as it allows learners to engage with the material at their own pace. The videos cover a wide range of subjects, including math, science, and humanities, providing visual and auditory explanations that can help reinforce concepts and enhance understanding. The interactive nature of these videos often includes quizzes and practice problems, allowing users to apply what they've learned immediately after viewing the instructional content.

While the platform may offer supplementary resources such as text-based materials or practice exercises, the core delivery method that distinguishes Khan Academy is its video instruction. This method is integral to their approach to making educational resources accessible and engaging for a diverse range of learners. The other options, such as text-only content, physical textbooks, and group discussions, do not accurately capture the primary offering of Khan Academy, which emphasizes video as a central component of its learning model.