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').
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Question: Tropical trees can be rampant growers, and can outgrow a wiring in as little as ____ days' time.\Question: Choose the right answer from options given a) four b) eight c) six d) ten

Answer: d


Question: Lions have ____ distinct vocalizations including roars, grunts and growls.\Question: Choose the right answer from options given a) eight b) six c) four d) nine

Answer: d


Question: Cowbirds have ____ types of songs, perched songs and whistles.\Question: Choose the right answer from options given a) four b) two c) five d) six

Answer:
b