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: Ostriches have ____ stomachs.\Question: Choose the right answer from options given a) four b) nine c) eight d) three

Output: d

Input: Consider Input: Japan is a highly urbanised country, with approximately ____ in every four people living in cities.\Question: Choose the right answer from options given a) ten b) no c) five d) three

Output: d

Input: Consider Input: Heavy shelf wear to paper at corners, worn through to boards on all ____ corners.\Question: Choose the right answer from options given a) ten b) three c) six d) four
Output: d