Step 1: Understanding different modes of transport.
There are various modes of transport such as roadways, railways, waterways, and airways. Each has its own advantages in terms of speed, cost, and comfort.
Step 2: Comparing speed and comfort.
Air transport is the fastest mode of transport and is considered very comfortable for long-distance travel. It saves time and connects distant regions quickly.
Step 3: Analysis of the options.
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(A) Air transport: Correct. It is the fastest and most comfortable.
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(B) Road transport: Slower compared to air transport.
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(C) Water transport: Economical but very slow.
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(D) Railways: Faster than roadways but slower than air transport.
Step 4: Conclusion.
Therefore, air transport is the fastest and most comfortable mode of transport.
Final Answer:} Air transport.