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').
--------
Question: Kabbalists group the simple letters into ____ triplets.\Question: Choose the right answer from options given a) four b) no c) ten d) three

Answer: a


Question: Females have two X-chromosomes, ____ from each parent.\Question: Choose the right answer from options given a) ten b) four c) one d) zero

Answer: c


Question: Banks hold ____ excess reserves, and the public holds no currency.\Question: Choose the right answer from options given a) no b) one c) four d) five

Answer:
a