The correct answer is Saurashtra.
Saurashtra is a region in the western part of Gujarat, India. It is the largest region in Gujarat, covering an area of 196,024 square kilometers. The region is home to a population of over 35 million people.
Saurashtra is a major producer of cotton. The region is home to over 2 million hectares of cotton cultivation. The region produces over 10 million bales of cotton annually.
The other options are incorrect. Kutch is a region in the northwestern part of Gujarat. It is the second largest region in Gujarat, covering an area of 45,652 square kilometers. The region is home to a population of over 10 million people. Kutch is not a major producer of cotton.
South Gujarat is a region in the southern part of Gujarat. It is the third largest region in Gujarat, covering an area of 101,248 square kilometers. The region is home to a population of over 20 million people. South Gujarat is not a major producer of cotton.
North Gujarat is a region in the northern part of Gujarat. It is the fourth largest region in Gujarat, covering an area of 75,210 square kilometers. The region is home to a population of over 15 million people. North Gujarat is not a major producer of cotton.