TASK DEFINITION: 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').
PROBLEM: Blood pressure is measured by ____ numbers.\Question: Choose the right answer from options given a) zero b) eight c) two d) seven

SOLUTION: c

PROBLEM: Indian reservations are part of five of the nation's ____ poorest counties.\Question: Choose the right answer from options given a) seven b) nine c) ten d) two

SOLUTION: c

PROBLEM: Microsporophylls bear ____ to eight microsporangia.\Question: Choose the right answer from options given a) two b) seven c) eight d) no

SOLUTION:
a