Final answer:
Rohit's desire to sail down the Amazon river suggests an adventure where a canoe or a raft would be fitting, as both are suitable for an intimate connection with nature.
Step-by-step explanation:
Based on the context provided, Rohit's wish to sail down the Amazon river in South America would likely be on a mode of transportation that is adventurous and immersed in nature. The options given are a yacht, canoe, cruise ship, and raft. Given the adventurous context and desire for an immersive experience, as expressed through his admiration of the New Zealand mountains and the allure of sailing away, a canoe or a raft would be the most fitting choices. Canoes are small and maneuverable, allowing for an intimate experience with the surroundings. Rafts are also used for more adventurous journeys down rivers like the Amazon. However, without a specific choice from Rohit, both could be considered correct to some extent. On the other hand, yachts and cruise ships are generally associated with luxury and less with the type of adventure and natural immersion that Rohit seems to be yearning for.