What is the Thai word for "homework"?

The correct term for "homework" in Thai is "kan ban." This word is derived from "kan," which means an activity or task, and "ban," which refers to home. Together, they specifically denote the tasks or assignments that students are expected to complete outside of school, effectively translating to "home work."

The other options represent different concepts in Thai. "Chan rian," for instance, means "I study" or "I learn," referring more generally to the act of studying rather than to assignments given to students. "Sop" translates to "essential" or "necessary," which does not relate to educational tasks. "Hong samut" refers to a "library" or "study room," which is a space used for learning or studying rather than the specific idea of homework. Thus, "kan ban" accurately captures the essence of homework in a way that the other words do not.