Evaporation of water is:
a process in which heat is neither evolved nor absorbed
a process accompanied by chemical reaction
an exothermic change
an endothermic change.

Options

A. a process in which heat is neither evolved nor absorbed
B. a process accompanied by chemical reaction
C. an exothermic change
D. an endothermic change.

Explanation

To determine the nature of the evaporation of water, we can analyze the options provided:

1. **Understanding Evaporation**: Evaporation is the process where liquid water turns into vapor. This occurs at any temperature, but it happens more rapidly at higher temperatures.

2. **Energy Requirement**: During evaporation, water molecules gain energy from their surroundings. This energy is necessary for the molecules to overcome intermolecular forces and transition from the liquid phase to the vapor phase.

3. **Classification of Processes**:
- **Exothermic Process**: A process that releases heat to the surroundings.
- **Endothermic Process**: A process that absorbs heat from the surroundings.

4. **Analyzing the Options**:
- **Option A**: "A process in which heat is neither evolved nor absorbed" - This is incorrect because evaporation requires energy input.
- **Option B**: "A process accompanied by chemical reaction" - This is incorrect as evaporation is a physical change, not a chemical reaction.
- **Option C**: "An exothermic change" - This is incorrect because evaporation absorbs heat rather than releasing it.
- **Option D**: "An endothermic change" - This is correct as evaporation requires heat absorption from the surroundings.

5. **Conclusion**: Therefore, the correct answer is that the evaporation of water is an endothermic change.

### Final Answer:
The evaporation of water is an endothermic change.