The correct answer is option 4: Major ports are under the Central government while minor ports are under the State government.

In India, the distinction between major and minor ports lies primarily in their administrative control. Major ports are categorized as such due to their significant size, cargo handling capacity, and strategic importance to national trade. These ports are directly managed and overseen by the Central government through the Ministry of Ports, Shipping, and Waterways. This ensures uniform standards, efficient regulation, and national-level strategic planning for these crucial gateways to international trade. Conversely, minor ports are significantly smaller in scale and volume of operations. They are primarily located within the jurisdiction of individual states, and their administration and development fall under the purview of respective state governments. This decentralized approach allows for more localized management based on regional needs and economic priorities. The difference isn't about the type of traffic handled or their geographic location (coastal vs. inland), nor about ownership (public vs. private). Both major and minor ports can handle imports, exports, and domestic traffic, and ownership models may vary within both categories.