In each of the following sentences, there is a blank space. Below each sentence,there are five words out of which one can be used to fill the blank to make the sentence grammatically and coherently correct. Find the most appropriate word that fit into the blank contextually.

Q:

Our Constitution was based on the belief that the free___________ of ideas, people and cultures is essential to the___________ of a democratic society.

• 1
  dissemination, congruence
• 2
  selection, concurrence
• 3
  reversal, Upholding
• 4
  interchange, preservation
• 5
  distinction, design