The correct answer is: A. Indo-Gangetic Valley
The Rigveda is the oldest Veda, a sacred Hindu text. It is a collection of Vedic Sanskrit hymns and is one of the four sacred texts of Hinduism. The Rigveda is believed to have been composed in the Indo-Gangetic Valley, which is a region in South Asia that includes the modern-day countries of India, Pakistan, and Bangladesh. The Indo-Gangetic Valley is a fertile region that is home to the Ganges River, one of the longest rivers in the world. The Rigveda is a valuable source of information about the early history of Hinduism and the Indo-Aryan people.
The other options are incorrect because:
- Option B, Punjab and Delhi region, is not the main focus of the Rigvedic culture. The Punjab and Delhi region is a region in North India that is home to the cities of Delhi and Amritsar. The Rigveda is not primarily focused on this region.
- Option C, Indus Valley, is not the main focus of the Rigvedic culture. The Indus Valley is a region in South Asia that is home to the ruins of the Indus Valley Civilization. The Rigveda is not primarily focused on this region.
- Option D, Region between the Swat and the Indus, is not the main focus of the Rigvedic culture. The region between the Swat and the Indus is a region in North Pakistan that is home to the Swat Valley and the Indus River. The Rigveda is not primarily focused on this region.