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: Humans learn through the ____ senses.\Question: Choose the right answer from options given a) eight b) one c) five d) ten

SOLUTION: c

PROBLEM: Sea urchins have ____ paired rows of tiny tube feet which are found amongst the spines.\Question: Choose the right answer from options given a) five b) two c) zero d) four

SOLUTION:
a