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]: Indian reservations are part of five of the nation's ____ poorest counties.\Question: Choose the right answer from options given a) seven b) nine c) ten d) two
[A]: c


[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]: Reciprocity involves dialogue and communication among ____ persons or groups.\Question: Choose the right answer from options given a) two b) three c) seven d) no
[A]:
a