TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Humans host _ species of louse, the head louse , the body louse and the pubic louse .

SOLUTION: three

PROBLEM: Some barnacles can feed in _ modes.

SOLUTION: two

PROBLEM: Apples have _ seed pockets or carpels.

SOLUTION:
five