The method used to remove temporary hardness of water is

Explanation

### Step-by-Step Solution:

1. **Understanding Temporary Hardness**: Temporary hardness of water is primarily caused by the presence of dissolved bicarbonate minerals, mainly calcium bicarbonate (Ca(HCO₃)₂) and magnesium bicarbonate (Mg(HCO₃)₂). This type of hardness can be removed by boiling the water.

2. **Clarke's Method**: The method specifically used to remove temporary hardness is known as Clarke's method. In this method, limewater (which is a solution of calcium hydroxide, Ca(OH)₂) is added to the hard water.

3. **Chemical Reaction**: When limewater is added to the hard water, it reacts with the bicarbonate ions present. The reaction can be summarized as follows:
- Ca(OH)₂ + Ca(HCO₃)₂ → 2CaCO₃ (precipitate) + 2H₂O
...