TASK DEFINITION: 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').
PROBLEM: All cattle have a ____ chambered stomach, consisting of a rumen, reticulum, omasum and abomasum.\Question: Choose the right answer from options given a) ten b) four c) six d) two

SOLUTION: b

PROBLEM: Every person is a carrier for about ____ rare genetic conditions.\Question: Choose the right answer from options given a) nine b) ten c) six d) three

SOLUTION: b

PROBLEM: Microorganisms are classified into ____ major groups.\Question: Choose the right answer from options given a) nine b) five c) four d) zero

SOLUTION:
c