Which pair is correct in the context of India and the world?

Correct answer: Spices and muslin trade items

Direct answer: Option A, spices and muslin. India had long-distance trade with many regions. Spices were valuable aromatic products used in food, medicine, and preservation. Muslin was a fine, light cotton cloth associated with Indian textile production and trade. Thus A correctly pairs two actual trade goods with India. Option B is wrong because the Tropic of Cancer is an imaginary geographical line, not a commercial product. Option C is wrong because the Himalayas are mountains, not a sea route; they may influence routes and climate but cannot be called a traded item. Option D is wrong because polar ice is a natural feature and Indian literature is a cultural product, not a matching trade-goods pair in this question. The key skill is to identify whether each word is a commodity, a physical feature, or a cultural idea. Memory cue: spices and fine cloth are goods; lines and mountains are geography.