TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Birds bitten by infected mosquitoes are infectious from _ to eight days.

SOLUTION: four

PROBLEM: Phosphates are made of _ phosphorus atom surrounded by four oxygen atoms.

SOLUTION: one

PROBLEM: Plants are divided into _ broad categories based on their mode of reproduction.

SOLUTION:
four