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').

[EX 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
[EX A]: a

[EX Q]: Cows can be up to ____ times more active than normal while in heat.\Question: Choose the right answer from options given a) eight b) nine c) two d) six
[EX A]: a

[EX Q]: Sculling is the rowing with ____ oars for each person.\Question: Choose the right answer from options given a) two b) nine c) five d) zero
[EX A]:
a