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: Summer is the hottest of the ____ temperate seasons , falling between spring and autumn .\Question: Choose the right answer from options given a) six b) four c) no d) nine

SOLUTION: b

PROBLEM: Astronomical observations suggest ____ or close to zero space-time curvature.\Question: Choose the right answer from options given a) six b) zero c) ten d) seven

SOLUTION: b

PROBLEM: Parvo can survive in the environment for as long as ____ months.\Question: Choose the right answer from options given a) ten b) six c) no d) nine

SOLUTION:
b