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').

[EX Q]: Japan is a highly urbanised country, with approximately three in every ____ people living in cities.\Question: Choose the right answer from options given a) seven b) two c) four d) eight
[EX A]: c

[EX Q]: Many people have ____ symptoms until they suffer chest pains or a heart attack.\Question: Choose the right answer from options given a) three b) one c) no d) seven
[EX A]: c

[EX Q]: Water occurs in sugar in ____ basic forms.\Question: Choose the right answer from options given a) eight b) five c) three d) ten
[EX A]:
c