Select the most appropriate option that means the same as the highlighted group of words to fill in the blank.
Most of the rivers dry up during the summer season, but the Ganga is full of water round the year because it is __________.

Correct option is C

The correct one-word substitute for the highlighted group of words is ‘perennial.’
· Perennial: Something that lasts throughout the year or for an indefinite period (सालभर मौजूद).
· Example: The Himalayas are home to several perennial rivers.
Meanings of Other Given Options:
· Biennial: Occurring every two years (द्विवार्षिक).
· Biannual: Occurring twice a year (साल में दो बार).
· Annual: Occurring once a year (वार्षिक).