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: Psychiatrists say that one in ____ people are mentally ill.\Question: Choose the right answer from options given a) one b) two c) four d) nine

SOLUTION: c

PROBLEM: Parliamentary democracy is less than ____ years old in Nigeria.\Question: Choose the right answer from options given a) eight b) two c) nine d) three

SOLUTION: b

PROBLEM: Acorns mature in ____ years.\Question: Choose the right answer from options given a) zero b) two c) five d) one

SOLUTION:
b