Mirani Dam was constructed mainly for

Mirani Dam located in Balochistan was designed primarily to provide irrigation water for agricultural development. By storing water from the Dasht River it allows year round supply to farmlands in arid areas that previously depended only on seasonal rains. The dam also assists in flood control and can support drinking water needs but its principal function remains irrigation. This makes it an important project for enhancing food security in the region. Hence the correct selection is option A irrigation purposes.