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: Tribal peoples teach that there are ____ parts to any ceremony, each equally important.\Question: Choose the right answer from options given a) four b) nine c) ten d) seven

Output: a


Input: Consider Input: National forests have regulations that restrict ____ wheeler use to established roads.\Question: Choose the right answer from options given a) no b) four c) six d) nine

Output: b


Input: Consider Input: Eastern chipmunks have ____ dark stripes while the western species has five.\Question: Choose the right answer from options given a) three b) no c) eight d) zero


Output: a