Fill in the blank with the most appropriate word with the help of the hint in the brackets.
The population of the world ___ very fast. (Happening right now)

Solution (By Examveda Team)

The sentence "The population of the world is rising very fast." uses the present continuous tense. The present continuous tense is formed by using the present tense of the verb "to be" (is) followed by the present participle of the main verb (rising). It is used to describe actions that are happening at the time of speaking or around the current time.

In this sentence, "is rising" indicates that the action of the world's population increasing is currently happening or in progress, as indicated by the hint "Happening right now."

In the other options:
Option A: rise (simple present) is not suitable for indicating an ongoing action happening right now.
Option B: rises (simple present) is not suitable for indicating an ongoing action happening right now.
Option D: rose (past tense) is not suitable for indicating an ongoing action happening right now.

The correct answer is Option C: is rising, which accurately conveys the current ongoing action of the world's population increasing.