TASK DEFINITION: Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').
PROBLEM: Potassium helps maintain fluid regulation and normal pH. All ____ help normalize.\Question: Choose the right answer from options given a) three b) six c) two d) one

SOLUTION: a

PROBLEM: Clover leaves with ____ to nine leaflets, illustrating a tendency to mutate.\Question: Choose the right answer from options given a) three b) zero c) ten d) five

SOLUTION: a

PROBLEM: Beta diversity relates to ____ pools relative to each other.\Question: Choose the right answer from options given a) three b) seven c) two d) nine

SOLUTION:
c