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').

[EX Q]: Human females have ____ X chromosomes.\Question: Choose the right answer from options given a) two b) six c) one d) eight
[EX A]: a

[EX Q]: Material culture is the realm of ____ dimensional objects that make up our everyday environment.\Question: Choose the right answer from options given a) ten b) three c) six d) four
[EX A]: b

[EX Q]: Children now account for only ____ percent of all forest fires caused in the United States.\Question: Choose the right answer from options given a) five b) four c) eight d) nine
[EX A]:
b