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').

Most children improve in three to ____ days.\Question: Choose the right answer from options given a) seven b) six c) four d) ten
a

Parapsychologists have ____ basic approaches to their subject matter.\Question: Choose the right answer from options given a) three b) two c) ten d) five
b

Kittens have four toes on their front feet and ____ on back feet.\Question: Choose the right answer from options given a) no b) eight c) five d) seven

c