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]: Electrons have almost ____ mass and are negatively charged.\Question: Choose the right answer from options given a) three b) seven c) zero d) no
[A]: d


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


[Q]: Ignorance exists in ____ forms .\Question: Choose the right answer from options given a) nine b) seven c) two d) zero
[A]:
c