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

Circles mark the approximate locations of ____ recently discovered solar systems.\Question: Choose the right answer from options given a) four b) no c) zero d) nine
a

Decimals are formed by marking off a ruler in ____ equal parts.\Question: Choose the right answer from options given a) seven b) one c) eight d) ten

d