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: Death occurs during the first ____ days of illness without intensive care.\Question: Choose the right answer from options given a) seven b) eight c) five d) nine

Output: a


Input: Consider Input: Matter exists in ____ forms, solid, fluid and plasma.\Question: Choose the right answer from options given a) ten b) nine c) three d) five

Output: c


Input: Consider Input: Nodal planes are flat and extend infinitely in ____ dimensions.\Question: Choose the right answer from options given a) four b) seven c) two d) one


Output: c