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: Ants have ____ noses.\Question: Choose the right answer from options given a) zero b) eight c) five d) three

SOLUTION: c

PROBLEM: Urea cycle requires the coordination of ____ different tissues.\Question: Choose the right answer from options given a) two b) four c) nine d) zero

SOLUTION: a

PROBLEM: Shigellosis usually resolves in five to ____ days but can last for weeks.\Question: Choose the right answer from options given a) ten b) two c) three d) seven

SOLUTION:
d