Step 1: Understanding the Question:
The question requires identifying the correct biological classification match between a compound and its category.
Step 2: Detailed Explanation:
• Analysis of Option (A): Globulins are "Simple Proteins" because they yield only amino acids upon hydrolysis. Conjugated proteins are those containing non-protein groups (like hemoglobin). This match is incorrect.
• Analysis of Option (B): Homopolysaccharides are carbohydrates composed of only one type of monosaccharide unit. Cellulose is composed entirely of $\beta$-D-glucose units. Thus, this match is correct.
• Analysis of Option (C): Phospholipids are "Compound Lipids" or "Complex Lipids" because they contain a phosphate group in addition to fatty acids and glycerol. Simple lipids include only fats and waxes. This match is incorrect.
• Analysis of Option (D): Stearic acid (C18:0) is a saturated fatty acid (contains no double bonds). Unsaturated fatty acids include oleic or linoleic acid. This match is incorrect.
Step 3: Final Answer:
Only option (B) represents a scientifically accurate classification.