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').

Q: Chickens take about six to ____ weeks to grow.\Question: Choose the right answer from options given a) eight b) two c) no d) five

A: a
****
Q: Grasshoppers can fly at speeds up to ____ miles per hour.\Question: Choose the right answer from options given a) eight b) seven c) two d) nine

A: a
****
Q: Mixtures are made of ____ or more substances mixed together.\Question: Choose the right answer from options given a) two b) one c) eight d) no

A:
a
****