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').

Dispassion is a ____ edged sword.\Question: Choose the right answer from options given a) six b) two c) zero d) four
b

Some infected horses show ____ signs and become chronic carriers of the disease.\Question: Choose the right answer from options given a) nine b) six c) four d) no
d

Japan is an extremely safe country with ____ worries or fears about allowing one's children to roam.\Question: Choose the right answer from options given a) zero b) five c) nine d) no

d