The correct answer is (c). Explanation & Key Takeaways: • Mumbai is one of the densest urban centres on the planet, but a peculiar ecosystem has emerged around the city's immense Sanjay Gandhi National Park. • Mumbai is the only city with a Leopard Habitat in its centre. • Mumbai is home to 47 leopards inside its national park. Hence, statement a is correct. • Dahisar river of Mumbai is 12km originated in the Tulasi lake near Sanjay Gandhi National Park. • The river extends from the park running through Sri Krishna nagar, under the Dahisar bridge moving through Daulat Nagar, Kandar pada and finally entering the Arabian sea through Gorai creek. • Poisar River originates from the Sanjay Gandhi National Park and empties into the Marve Creek and ends in the Arabian Sea. • Oshiwara River of Mumbai begins from the Aarey Milk Colony, goes directly into the Goregaon hills, beyond the Aarey Milk Colony and gets end in Malad Creek. • Mithi River of Mumbai originates from the Powai and Vihar lakes. • The river is seasonal and rises during the monsoons. • It is also well known that the Mahim bay area, where the Mithi River meets the Arabian Sea. • It is a nominated bird sanctuary where migratory birds come for nesting. • Hence, statement b is correct and c is not correct.