Concept:A good language textbook should be suitable for learners. It must have appropriate vocabulary, interest, and length.Explanation:The text should not be culturally overloaded. That makes it hard to understand.It must have vocabulary that matches the learner's level.The content should be relevant and interesting to keep learners engaged.The length should be right – not too long or too short.Option A says "culturally overloaded" – that is not a good quality.Answer:Option A is NOT true.