Concept:The author's final advice is drawn from the concluding lines of the passage, which advocate using AI wisely by balancing human guidance with machine efficiency.
Explanation:The passage discusses both the benefits of AI (personalized learning, chatbots) and its risks (loss of critical thinking, data privacy).
In the end, the author states that AI can be a useful tool when used wisely, and that the key is balancing human guidance with machine efficiency.
This directly matches Option 3: "Balance tech and human input."
Option 1 (Replace teachers) is incorrect because the author never suggests eliminating teachers.
Option 2 (Use only AI) is wrong because the author warns against over-dependence.
Option 4 (Avoid all AI) is wrong because the author acknowledges AI’s usefulness.
Answer:Option 3: Balance tech and human input