Step 1: Understanding the question.
Nagpur Plan refers to the national development plan related to the development of the transport system. It primarily deals with road transport and how it connects various regions.
Step 2: Analyzing the options.
(A) सड़क परिवहन से: Correct — The Nagpur Plan is mainly focused on the development of road transport in India.
(B) जल परिवहन से: This is incorrect, as the Nagpur Plan is not related to water transport.
(C) वायु परिवहन से: This is incorrect, as it is not focused on air transport.
(D) पाइपलाइन से: This is incorrect, as the plan does not primarily deal with pipeline transport.
Step 3: Conclusion.
The correct answer is (A) सड़क परिवहन से, as Nagpur Plan is related to road transport development.