Concept:Transportation supports economic growth by connecting regions, expanding resource use, and generating jobs, not by causing national disintegration.
Explanation:Transportation moves goods and services between producers and consumers, which boosts trade.
It opens up new lands for agriculture and resource exploitation.
It creates employment for many people, such as drivers and loaders.
National disintegration refers to the break-up or weakening of a country's unity.
Transportation does not cause this; instead, it encourages national integration.
Therefore, disintegration is the exception among the listed roles.
Answer:A. national disintegration