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: Many comets have ____ tails.\Question: Choose the right answer from options given a) two b) six c) three d) one

Answer: a


Question: Most resistors have three coloured bands close together at one end and ____ single band at the other.\Question: Choose the right answer from options given a) two b) one c) ten d) five

Answer: b


Question: Electricity is produced in ____ major ways.\Question: Choose the right answer from options given a) five b) four c) three d) two

Answer:
c