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').

Copper is ____ times higher in dog liver than in human liver.\Question: Choose the right answer from options given a) three b) ten c) six d) one
b

Pods contain less than ____ animals, mainly females with calves and sexually immature males.\Question: Choose the right answer from options given a) zero b) six c) no d) ten
d

Mites have a six legged nymph stage and an ____ legged adult stage.\Question: Choose the right answer from options given a) eight b) one c) three d) four

a