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').

Physical abuse occurs in approximately one out of every ____ dating relationships.\Question: Choose the right answer from options given a) six b) four c) one d) ten
b

Quadrupeds are animals with ____ feet, such as cows.\Question: Choose the right answer from options given a) four b) six c) ten d) two
a

Some females live more than ____ years.\Question: Choose the right answer from options given a) no b) ten c) four d) three

d