Step 1: Understanding the Question:
• We arrange the successive focuses of physical education over time.
Step 2: Detailed Explanation:
• Physical education first stressed physical fitness (B), then moved to skill development (C), then to a health orientation (A), and finally to an academic and research orientation (D).
• The sequence is B, C, A, D.
Step 3: Final Answer:
The correct option is (C) B, C, A, D.