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]: Bytes are sets of ____ bits.\Question: Choose the right answer from options given a) four b) eight c) five d) ten
[A]: b


[Q]: Batteries consist of ____ electrodes immersed in an electrolyte.\Question: Choose the right answer from options given a) two b) eight c) three d) seven
[A]: a


[Q]: Inversions have the classic double loop at meiosis, and have ____ crossovers when heterozygotes.\Question: Choose the right answer from options given a) seven b) two c) no d) four
[A]:
c