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: Sexual reproduction is varied in ____ ways.\Question: Choose the right answer from options given a) seven b) two c) five d) three

SOLUTION: d

PROBLEM: Pairs encodes all sets of objects with ____ components.\Question: Choose the right answer from options given a) ten b) five c) two d) no

SOLUTION: c

PROBLEM: Spiders only have ____ parts to their body.\Question: Choose the right answer from options given a) eight b) nine c) zero d) two

SOLUTION:
d