instruction:
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').
question:
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
answer:
d


question:
Batteries consist of ____ electrodes immersed in an electrolyte.\Question: Choose the right answer from options given a) two b) eight c) three d) seven
answer:
a


question:
Budgerigars are probably easiest to sex when they reach maturity at six to ____ months old.\Question: Choose the right answer from options given a) nine b) ten c) seven d) eight
answer:

c