Explanations:Chennai, the capital city of Tamil Nadu, is a significant economic and cultural hub in South India. The city is known for its port, which plays a crucial role in the state's and the country's trade activities. The Chennai Port, also known as the Ennore Port, is one of the oldest and busiest ports in India, handling a substantial volume of cargo and facilitating international trade.
Chennai's climate is characterized by its warm and humid conditions, especially during the summer months. The city experiences a tropical wet and dry climate, with high temperatures and humidity levels throughout the year. The warm and humid climate is a result of Chennai's geographical location, which is close to the Bay of Bengal, and its proximity to the equator.
However, the statement that the Lotus Temple is located in Chennai is incorrect. The Lotus Temple, one of the most famous Bahá'í Houses of Worship in the world, is actually located in Delhi, the capital city of India. The temple, known for its unique lotus-shaped structure, is a popular tourist attraction and a significant religious site, but it is not situated in Chennai.
Therefore, the correct statements are that Chennai Port is used for trade and Chennai is warm and humid. The Lotus Temple's location in Chennai is a misconception, and thus, the correct answer is Option D, which includes only the true statements.