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: Turkish citizens can enter Bosnia and stay up to ____ months without a visa.\Question: Choose the right answer from options given a) five b) seven c) four d) three

A: d
****
Q: Bone marrow replenishes itself fully within ____ weeks.\Question: Choose the right answer from options given a) nine b) no c) one d) two

A: d
****
Q: Geological faults exist where ____ plates come into contact.\Question: Choose the right answer from options given a) two b) eight c) three d) four

A:
a
****