Explanation: The question asks for the biggest commercial port on the western coast of India. To understand this, it is essential to know the geography and economic significance of the ports along the western coast.
India has a long coastline, and several ports play a crucial role in the country's maritime trade. The western coast, in particular, is home to several important ports, but Mumbai stands out as the largest and most significant commercial port.
Mumbai, located in the state of Maharashtra, is not only a major commercial port but also a significant economic hub. The port of Mumbai handles a substantial volume of cargo, including both imports and exports. Its strategic location on the Arabian Sea makes it a crucial gateway for international trade. The port's extensive infrastructure, including modern facilities and efficient logistics, supports its role as a major commercial port.
Other ports on the western coast, such as Kochi in Kerala and the ports in Gujarat like Kandla and Mundra, are also important but do not match the scale and commercial significance of Mumbai. Kochi, for instance, is more known for its historical significance and tourism, while the ports in Gujarat, though significant, are not as large as Mumbai in terms of commercial activity.
On the other hand, Chennai, mentioned in the options, is a major port but is located on the eastern coast of India, not the western coast. This makes it irrelevant to the question at hand.
In conclusion, the port of Mumbai is the largest commercial port on the western coast of India, making it the correct answer to the question. Its economic importance, strategic location, and extensive infrastructure make it a vital component of India's maritime trade. Understanding the geographical and economic significance of these ports is crucial for comprehending the role of maritime trade in India's economy.