Step 1: Instrument-Parameter Correlation.
- The Tintometer is utilized for color measurement, aligning with parameter (II). - Turbidity is quantified using a Nephelometer, correlating to parameter (III). - The Imhoff cone serves to measure settleable solids, corresponding to parameter (IV). - Volatile solids are determined via a Muffle furnace, mapping to parameter (I).
Step 2: Determination.
The established correlations are: (A) with (II), (B) with (III), (C) with (IV), and (D) with (I).
Final Answer: \[ \boxed{4. (A) - (II), (B) - (III), (C) - (IV), (D) - (I)}\]