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: Wind is renewable, and produces ____ emissions or by-products.\Question: Choose the right answer from options given a) five b) nine c) zero d) no

SOLUTION: d

PROBLEM: Ozone is a form of molecular oxygen that consists of ____ oxygen atoms linked together.\Question: Choose the right answer from options given a) four b) three c) two d) ten

SOLUTION:
b