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').

[Q]: Western culture offers only ____ genders, man or woman.\Question: Choose the right answer from options given a) three b) two c) one d) four
[A]: b


[Q]: Blood pressure is measured by ____ numbers.\Question: Choose the right answer from options given a) zero b) eight c) two d) seven
[A]: c


[Q]: Intussusception has the highest incidence in infant boys between the ages of ____ and eight months.\Question: Choose the right answer from options given a) four b) one c) two d) zero
[A]:
a