Both statements regarding the Indus Valley Civilization are correct. The civilization is often characterized as predominantly secular due to its lack of monumental religious structures compared to contemporaneous civilizations, suggesting that daily life, trade, and civic planning took precedence. Additionally, historical evidence confirms that cotton was cultivated and woven into textiles, establishing the region as one of the earliest centers for cotton textile production, which played a significant role in trade and economy. These aspects highlight the advanced socio-economic organization of the Indus Valley people, making this civilization integral to the study of ancient Indian history in UPSC Prelims.