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').
--------
Question: Birds have ____ eyes.\Question: Choose the right answer from options given a) eight b) five c) nine d) two

Answer: d


Question: Interdigital glands are present on all ____ feet, and are slightly larger on the front feet.\Question: Choose the right answer from options given a) three b) five c) four d) eight

Answer: c


Question: Mast cells release ____ sets of mediators with dramatic, immediate, local and systemic effects.\Question: Choose the right answer from options given a) eight b) three c) five d) six

Answer:
b