Fructose is sometimes called ....... sugar.

Explanation

**Step-by-Step Text Solution:**

1. **Identify the Type of Sugar**: Fructose is a type of sugar that is classified as a monosaccharide. Monosaccharides are the simplest form of carbohydrates.

2. **Common Name**: Fructose is commonly referred to as "fruit sugar". This name is derived from its natural occurrence in fruits, where it is predominantly found.

3. **Occurrence**: Fructose is not only found in fruits but also in some vegetables and honey. This widespread presence in nature contributes to its nickname.

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