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').

Some homeopathic remedies are so dilute, ____ molecules of the healing substance remain.\Question: Choose the right answer from options given a) ten b) three c) one d) no
d

Women live an average of five to ____ years longer then men.\Question: Choose the right answer from options given a) one b) five c) ten d) seven
d

Mammals typically have ____ parathyroid glands, while other types of animals typically have six.\Question: Choose the right answer from options given a) four b) ten c) five d) no

a