Sucrose is a .....sugar.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Term "Sugar":**
- Sugar is a general term used to describe sweet, short-chain, soluble carbohydrates. They can be classified into different categories based on their structure.

2. **Classification of Sugars:**
- Sugars can be classified into monosaccharides, disaccharides, oligosaccharides, and polysaccharides.
- **Monosaccharides:** These are the simplest form of sugars, consisting of a single sugar unit (e.g., glucose, fructose).
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