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: Chemical interactions are essentially electron interactions of ____ atoms.\Question: Choose the right answer from options given a) six b) no c) ten d) two

SOLUTION: d

PROBLEM: Many aneurysms have ____ symptoms until they burst.\Question: Choose the right answer from options given a) no b) five c) six d) seven

SOLUTION: a

PROBLEM: Meerkats can have one to seven babies at ____ time .\Question: Choose the right answer from options given a) one b) two c) three d) nine

SOLUTION:
a