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: Vaporization can occur in temperatures as low as ____ degrees.\Question: Choose the right answer from options given a) one b) zero c) eight d) two

SOLUTION: b

PROBLEM: Argentine ants are able to establish new colonies with as little as ____ worker ants and one queen.\Question: Choose the right answer from options given a) no b) two c) ten d) five

SOLUTION: c

PROBLEM: Mammals nourish young with milk, have a four- chambered hear, ____ legs, and breath with lungs.\Question: Choose the right answer from options given a) four b) nine c) ten d) seven

SOLUTION:
a