Teacher: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').
Teacher: Now, understand the problem? Solve this instance: Fuzzy logic is an attempt to combine the ____ techniques.\Question: Choose the right answer from options given a) ten b) three c) eight d) two
Student:
d