Select the most appropriate option to fill in blank number 1.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. biggest.
The sentence is talking about Africa having the largest expanse of savannas.
Biggest correctly expresses this idea of size/extent.
Option 1 (cleverest): Refers to intelligence, which is irrelevant here.
Option 2 (heaviest): Refers to weight, not area or extent.
Option 3 (fattest): Informal and unsuitable for describing land area.