The activities that contain hidden water usage are:
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Growing cotton to make fabric - This involves significant water usage during the cultivation of cotton.
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Growing cattle feed - Raising livestock also involves hidden water use in the production of feed crops.
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Processing and dyeing fabric - These processes consume water for both the dyeing and finishing treatments applied to fabric.
Thus, the correct answers are:
- Growing cotton to make fabric
- Growing cattle feed
- Processing and dyeing fabric