The cultural practice mentioned in the short story "The First Tears" is that it's story's action focuses on the cultural practice of hunting seals.
A cultural practice refers to any practice or ways of doing things by a particular culture or group of people. This can mean the way they dress, or eat, or hunt, or even do anything.
This would become the very first event of people crying salty tears, producing water from their eyes. Thus, the correct answer is option C.
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