Option d is the correct answer Maize, native to the Americas, wasn't in India until the 16th century. Maize reached Europe in the 15th century via Spanish explorers and was later introduced to India by Portuguese traders. It's now a staple crop, influencing diverse foods. Important Tips Time period of cultivation of Various crops: Archaeological findings indicate rice as a foundational element of India's ancient societies, traced back to 6500 BCE along the Ganges River valley, highlighting its longstanding role in the region's history. During the Neolithic revolution ( 8000 − 4000 8000−4000 BCE) in India, Agro pastoralism practices emerged, featuring methods like row planting, threshing, and grain storage. Mehrgarh showed barley, wheat farming, cattle, sheep, and goat rearing around 8000-6000 BCE.