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: Decapod crustaceans have ____ pairs of limbs.\Question: Choose the right answer from options given a) five b) four c) six d) seven

SOLUTION: a

PROBLEM: Nymphs feed and mature through five instars in about ____ to eight weeks.\Question: Choose the right answer from options given a) six b) five c) seven d) zero

SOLUTION: a

PROBLEM: All quetzals have ____ legs.\Question: Choose the right answer from options given a) four b) zero c) eight d) ten

SOLUTION:
a