All three statements listed here are true and therefore option 3: `All three` becomes the correct choice.

1. The Government of India does provide Minimum Support Price for various crops, including niger (Guizotia abyssinica) seeds, to safeguard the farmers against any sharp fall in farm prices.

2. Niger is indeed a kharif crop. A kharif crop is a crop that is sown at the start of the rainy season, and Niger seeds meet this criterion, as they require wet, warm weather to grow.

3. Lastly, it`s true that some tribal people in India use niger seed oil for cooking. Niger seeds are rich in oil and are often used for the oil extraction which is used for various purposes such as cooking, making soaps, and even in paints and illuminated manuscripts.

So, all the said statements are true and correct.