Step 1: Understanding the solutions.
- Saturated Solution: A solution that has the maximum amount of solute dissolved at a specific temperature and pressure. Hence, it matches with explanation (I).
- Isotonic Solutions: Solutions that have the same osmotic pressure. This matches with explanation (IV).
- Binary Solution: A solution containing two components, a solute and a solvent. This matches with explanation (III).
- Hypertonic Solution: A solution that has a higher osmotic pressure than another solution, hence it matches with explanation (II).
Step 2: Matching the pairs.
Thus, the correct matches are:
(A) - (I), (B) - (III), (C) - (IV), (D) - (II).
Final Answer:
\[
\boxed{(A) - (I), (B) - (III), (C) - (IV), (D) - (II)}
\]