Where mangrove forests are found?
A. Tropical areas
B. Sub-Tropical areas
C. Tropical and subtropical tidal areas
D. None of these

Hint: Mangrove is a small tree that accumulates in the inshore saline or brackish water. The phrase is also adopted for tropical coastal vegetation comprising the same variety of species.

Complete answer:
Mangroves are also called halophytes, and are revised to live in difficult coastal circumstances. They comprise a complex salt filtration network and detailed root system to cope with saltwater immersion and wave action. They are altered to the low oxygen requirements of waterlogged mud.
Mangroves are the only trees that are eligible for maturing in saltwater. They make distinct intertidal forests at the edge of land and sea, they are depicted on all mainlands with tropical and subtropical coasts, i.e. North, South America, Asia, and Oceania.
Mangrove forests are also called mangals and are a type of intertidal swampland ecosystems. The phrase mangrove arises from the Portuguese word mangue which implies “tree” and the English word grove which is used for shrubs that originate in shallow, sandy, or muddy regions. A mangrove is known as a shrub that grows in coastal saline water. The word is also used for tropical coastal vegetation of such variety. Mangroves arise worldwide in the tropical and subtropical tidal areas.

Thus, option (C) is correct.

Note: This society of plants and animals in the tidal marsh habitat exchanges matter and energy with adjacent terrestrial and marine ecosystems. However, mangroves are limited in various ecosystems. They are incredibly fragile and can unexpectedly disappear, therefore disrupting the coastline.