Explanation:

- Option 1: Red Sindhi

- Red Sindhi is indeed an indigenous dairy breed of cattle, primarily found in the Sindh province of Pakistan. It is well-known for its high milk yield and adaptability to different climates.

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- Option 2: Chippiparai

- Chippiparai is an indigenous breed, but it's not a dairy breed. It is actually a breed of sighthound dog, native to the Tamil Nadu region in India.

- Option 3: Kanni

- Kanni is also a breed of dog from Tamil Nadu, India. It is not related to cattle at all.

- Option 4: Kombai

- Kombai, like Chippiparai and Kanni, is a breed of dog. It is not associated with dairy cattle.

Your understanding is spot on with Option 1 being the indigenous dairy breed of cattle.