d. subsistence strategy is the answer.
In Cultural Anthropology, subsistence strategies are the ways that people obtain food from their environment. There are five basic subsistence strategies:
foraging, pastoralism, horticulture, agriculture, and industrialism.
Simply put, livelihood refers to how people meet their basic needs, especially food procurement and processing.
Harappa ate a variety of animal and plant products, including fish and meat, wheat, corn, millet, legumes, rice, and other edible foods. Cattle, sheep, goats, buffalo, and pigs were domesticated by Harappa for their nutrition.
A subsistence strategy is a way society uses technology to provide for the needs of its members.
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