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: Studies show that childhood obesity is epidemic and that ____ in five children is overweight.\Question: Choose the right answer from options given a) one b) two c) nine d) ten

SOLUTION: a

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: Insects also go through ____ different pathways of development .\Question: Choose the right answer from options given a) zero b) nine c) two d) seven

SOLUTION:
c