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: Japan is a highly urbanised country, with approximately ____ in every four people living in cities.\Question: Choose the right answer from options given a) ten b) no c) five d) three

SOLUTION: 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: Snow plows begin when snow exceeds ____ inches.\Question: Choose the right answer from options given a) five b) two c) zero d) no

SOLUTION:
b