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: Meteorologists rely mainly on ____ types of satellites.\Question: Choose the right answer from options given a) four b) two c) ten d) three

SOLUTION: b

PROBLEM: Lines of force are ____ dimensional, surrounding a bar magnet on all sides.\Question: Choose the right answer from options given a) eight b) three c) zero d) no

SOLUTION: b

PROBLEM: Scandium is a silvery metal that is soft and has a density of about ____ times that of water.\Question: Choose the right answer from options given a) three b) one c) two d) ten

SOLUTION:
a