Final answer:
According to Knowles' Principles of Adult Learning, adults must be partners in their own educational plans and invested in their educational experience. They must also be presented with relevant material.
Step-by-step explanation:
According to Knowles' Principles of Adult Learning, adults must be partners in their own educational plans and invested in their educational experience in order for learning to take place. They must also be presented with relevant material that is applicable to their needs and interests. Therefore, the correct answer is option d. A and B.