TASK DEFINITION: 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').
PROBLEM: Blood pressure is measured by ____ numbers.\Question: Choose the right answer from options given a) zero b) eight c) two d) seven

SOLUTION: c

PROBLEM: Elephants have four molars, which are replaced ____ times, for a total of six sets in a lifetime.\Question: Choose the right answer from options given a) five b) no c) three d) one

SOLUTION: a

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

SOLUTION:
b