A landmass bordered by water bodies on three sides is called _______.
A. Isthmus
B. Archipelago
C. Peninsula
D. Island

Hint:
-Such a landmass is almost an island.
-India is an example of such a landmass.
-Rising and falling of sea level form such a landmass.

Complete answer:
Option A. An isthmus is a tight segment of land that interfaces two bigger landmasses and isolates two waterways. Isthmuses have been vital areas for quite a long time. It is an incorrect option.

Option B. An archipelago is a gathering of islands firmly dissipated in a waterway. Ordinarily, this waterway is the sea, yet it can likewise be a lake or stream. It is an incorrect option.

Option C. A landmass encompassed by water on three sides is known as a peninsula. The word comes from the Latin "paene insula" signifying "almost an island". Thus, it is the correct option.

Option D. Island, any territory of land more modest than a landmass and altogether encompassed by water. Islands may happen in seas, oceans, lakes, or waterways. A gathering of islands is called an archipelago. It is an incorrect option.

Therefore, the correct answer is C

Note:
 Numerous nations are on landmasses and may either take up a piece of a promontory, (for example, Portugal) or every last bit of it, (for example, India). Portions of a nation may likewise be on a promontory. For instance, Jutland is a landmass, as is Baja California in Mexico.

The Arabian Peninsula is normally referred to as the biggest promontory on the planet with a region of 3,237,500 square kilometers.

Peninsular India involves the assorted topological and climatic examples of South India. The Peninsula is fit as a fiddle of a tremendous transformed triangle, limited on the west by the Arabian Sea, on the east by the Bay of Bengal, and the Vindhya and Satpura ranges on the north.