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: Malignant tumors are more dangerous, and survival times can range from ____ months to several years.\Question: Choose the right answer from options given a) one b) no c) ten d) six

Output: d


Input: Consider Input: Chacoan peccaries are the largest of the ____ peccary species.\Question: Choose the right answer from options given a) eight b) three c) ten d) no

Output: b


Input: Consider Input: Females generally give birth to a single calf every ____ to five years.\Question: Choose the right answer from options given a) ten b) three c) seven d) nine


Output: b