What is the Thai term for "transportation"?

The Thai term for "transportation" is indeed "kan khon song." This term encapsulates the concept of the transport or conveyance of people or goods from one place to another, which is central to discussions of mobility and logistics in any context.

The other options relate to different concepts. "Hong samut" refers to a "classroom" or "study room," making it irrelevant to transportation. "Kan ban" means "home" or "household," which does not pertain to the action or process of transporting. "Rot bas" translates to "bus," representing a specific mode of transportation rather than the broader concept of transportation itself. Thus, "kan khon song" is the most appropriate term for the general concept of transportation in Thai.