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').

Example Input: Ankle joint has ____ degrees of freedom.\Question: Choose the right answer from options given a) seven b) eight c) four d) three
Example Output: d

Example Input: Most families have between ____ and eight children.\Question: Choose the right answer from options given a) four b) one c) five d) three
Example Output: c

Example Input: VEAL is the meat obtained from a young calf killed when ____ to eight weeks old.\Question: Choose the right answer from options given a) ten b) two c) eight d) six
Example Output:
d