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').

Twin souls are the last ____ souls to individualize.\Question: Choose the right answer from options given a) two b) ten c) zero d) six
a

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

Mammals have ____ sets of teeth, milk and permanent.\Question: Choose the right answer from options given a) nine b) zero c) four d) two

d