................shows metarotation but ..........does not .

Explanation

**Step-by-Step Solution:**

1. **Understanding Mutarotation**: Mutarotation is the change in the optical rotation of a sugar solution that occurs when an equilibrium is established between two anomeric forms of the sugar. This process is significant for sugars that can exist in cyclic forms, which can interconvert.

2. **Identifying the Sugars**: In this case, we are comparing glucose and sucrose. Glucose is a monosaccharide, while sucrose is a disaccharide made up of glucose and fructose.

3. **Glucose and Mutarotation**: Glucose is a reducing sugar, which means it has a free aldehyde or ketone group that can participate in redox reactions. This property allows glucose to undergo mutarotation, as it can interconvert between its α and β anomeric forms, leading to a change in optical rotation.

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