Read the passage and answer the question.Along India's coasts, from the Sundarbans in the east to the creeks of Gujarat in the west, mangrove forests stand where the land meets the sea. To a casual visitor they may look like tangled, muddy thickets o…

Read the passage and answer the question.

Along India's coasts, from the Sundarbans in the east to the creeks of Gujarat in the west, mangrove forests stand where the land meets the sea. To a casual visitor they may look like tangled, muddy thickets of little value. In truth, they are among the hardest-working ecosystems on the planet. Their dense roots slow down waves and trap sediment, so a coastline protected by mangroves loses far less land to erosion. When cyclones strike, villages behind a healthy belt of mangroves often suffer less damage than those that have cleared them for farms or fish ponds.

Mangroves also act as nurseries. Many fish, crabs and prawns that are later caught in the open sea spend their early lives sheltering among the roots, where larger predators cannot easily follow. A fisherman far out at sea may therefore depend on a forest he has never visited. In addition, the waterlogged soil beneath mangroves stores carbon for centuries, locking away much more per hectare than many forests on dry land.

Despite these benefits, mangroves have been cut down across the world to make way for ports, hotels and aquaculture. Replanting is possible, but it succeeds only when the natural flow of the tides is restored and local communities share in the gains. Protecting the forests that still remain is, by every measure, cheaper than rebuilding them.

Which of the following is the most suitable title for the passage?

A. How to Start a Fish Farm

B. The History of the Sundarbans

C. Mangroves: Quiet Guardians of the Coast

D. Cyclones on India's Coasts