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: Microwave ovens emit ____ kinds of radiation.\Question: Choose the right answer from options given a) six b) two c) four d) eight

SOLUTION: b

PROBLEM: Most children have a vocabulary of eight to ____ words, including names, by eighteen months of age.\Question: Choose the right answer from options given a) ten b) one c) seven d) eight

SOLUTION: a

PROBLEM: Body lice develop in about ____ to five weeks.\Question: Choose the right answer from options given a) two b) four c) no d) three

SOLUTION:
d