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: Heat pumps give off ____ fumes or harmful products of combustion.\Question: Choose the right answer from options given a) four b) zero c) six d) no

SOLUTION: d

PROBLEM: Pneumatic motor is a six-point unit with ____ pneumatics facing up and three facing down.\Question: Choose the right answer from options given a) five b) no c) three d) nine

SOLUTION: c

PROBLEM: Hagfishes have pinkish gray wormlike bodies and four or ____ short tentacles around their mouths.\Question: Choose the right answer from options given a) one b) five c) six d) zero

SOLUTION:
c