Concept:Teaching-Learning Material (TLM) refers to resources that support and enhance the classroom instruction process, making it more effective and engaging for both teacher and learner.Explanation:The primary purpose of a good TLM is to bridge the gap between abstract ideas and concrete understanding. It helps the teacher present concepts in a more organised and engaging manner, and it helps learners grasp, practice, and apply knowledge. While a TLM may also assist language acquisition, aid a teacher’s own learning, or be entertaining, its core function is to facilitate the teaching-learning process itself. Option C directly states this essential role.Answer:Option C – “facilitate the teaching-learning process” is the correct answer.