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: Today there are ____ major breweries in Mexico that produce a spectrum of tasty beverages.\Question: Choose the right answer from options given a) nine b) six c) zero d) eight
Example Output: b

Example Input: Scorpions can live for ____ to seven years.\Question: Choose the right answer from options given a) one b) six c) five d) three
Example Output: d

Example Input: Cleavage is usually in ____ directions parallel to the rhombohedron form.\Question: Choose the right answer from options given a) zero b) five c) two d) three
Example Output:
d