(A) "every alternate day" → means every other day (visiting on day 1, day 3, day 5, etc.)
(B) "adapt to the new environment" → means to adjust or modify oneself to fit new conditions
(C) "an alternative approach" → means a different option or substitute method
(D) "adopt the new policy" → means to formally accept and implement the policy
Hence, Option 2: (A) - (IV), (B) - (I), (C) - (II), (D) - (III) → The key distinctions are: "alternate" (every other), "adapt" (adjust to), "alternative" (different option), and "adopt" (formally accept/implement) → correct