Select the most appropriate option to fill in the blank No. 4.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4, i.e., entire.
Blank 4 Word Type: Adjective (modifying "population")
Explanation: The phrase is "even if the ___ population of the planet could somehow be vaccinated..."
We need a word that means "whole or total".
Entire means the whole or complete group – correct here.
Full is used for capacity, not ideal with "population".
Completely is an adverb, grammatically incorrect here.
Absolute is too abstract and doesn't naturally fit with "population".
Correct Sentence: ...even if the entire population of the planet could somehow be vaccinated...
Conclusion: The correct option is entire.