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').

Flatbed scanners can also record ____ dimensional objects of many sizes and shapes.\Question: Choose the right answer from options given a) eight b) one c) four d) three
d

Acoustic guitars come in ____ types.\Question: Choose the right answer from options given a) two b) ten c) one d) four
a

Humanized monoclonals are ____ percent mouse and ninety percent human.\Question: Choose the right answer from options given a) ten b) six c) one d) zero

a