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').

Input: Consider Input: Manatees swim two to ____ miles per hour.\Question: Choose the right answer from options given a) no b) six c) five d) zero

Output: b


Input: Consider Input: Mechanical digestion occurs as ____ strong layers of muscle contract to produce a churning motion.\Question: Choose the right answer from options given a) four b) no c) three d) six

Output: c


Input: Consider Input: Hyraxes have ____ toes on their hind feet.\Question: Choose the right answer from options given a) nine b) three c) eight d) zero


Output: b