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: Selenium is ____ times more poisonous than arsenic.\Question: Choose the right answer from options given a) one b) five c) eight d) two

SOLUTION: b

PROBLEM: Most spiders have ____ eyes, some only six and several have fewer or none.\Question: Choose the right answer from options given a) ten b) two c) eight d) no

SOLUTION: c

PROBLEM: Bolero is a platform which ____ of the world's major banks are participating in.\Question: Choose the right answer from options given a) four b) nine c) five d) seven

SOLUTION:
d