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 Input:
Lines of force are ____ dimensional, surrounding a bar magnet on all sides.\Question: Choose the right answer from options given a) eight b) three c) zero d) no

Ex Output:
b


Ex Input:
Tardigrades are microscopic, water-dwelling, segmented animals with ____ legs.\Question: Choose the right answer from options given a) eight b) nine c) one d) seven

Ex Output:
a


Ex Input:
Wisdom is the second of the ____ sefirotic emanations.\Question: Choose the right answer from options given a) no b) eight c) ten d) six

Ex Output:

c