The charitable organization Heifer International uses donations to provide people in developing nations with farm animals to help feed hungry families. Heifer International is therefore contributing to

Subsistence farming

Explanation:

With the provision of such donations, Heifer international is contributing to subsistence farming.

Subsistence farming is a kind of farming where proceeds from the farm are for immediate consumption. Peop who engage in such farming do it to meet the immediate needs of themselves and their families. Heifers donation is targeted towards breeding of farm animals for the people to feed, which is basically for their survival. This is what makes it a contribution to subsistence farming.

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