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').

[EX Q]: Dicots have ____ seeds leaves, whereas monocots have only one.\Question: Choose the right answer from options given a) four b) one c) seven d) two
[EX A]: d

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

[EX Q]: Blood pressure is governed by ____ main factors and there are medications that address each one.\Question: Choose the right answer from options given a) ten b) eight c) three d) six
[EX A]:
c