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: Embryos develop and hatch in about four weeks, then spend four to ____ months in the tadpole stage.\Question: Choose the right answer from options given a) five b) nine c) eight d) two

SOLUTION: a

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: Final nymphs molt into adult males or females, also with ____ legs.\Question: Choose the right answer from options given a) eight b) three c) six d) zero

SOLUTION:
a