Select the most appropriate option to substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’.
Corona virus has not yet reached some parts in world.

Correct option is C

The correct substitution for the highlighted segment "some parts in world" is some parts of the world.
Grammatical Rule Used: When referring to different areas within a larger place, the correct preposition is "of" to indicate possession or belonging. The phrase "parts of the world" correctly indicates various regions across the globe.
Corrected Sentence: Corona virus has not yet reached some parts of the world.
Example:
· Many traditions are unique to certain parts of the world.