What is the purpose of the comma in a sentence?

Which statement best represents a claim? a.people who do not exercise their right to vote are truly wasting a precious democratic privilege. b.the benefits of mandatory voting in the united states far outweigh the potential drawbacks. c.some countries require people who do not vote in certain elections to pay a moderate fine. d. i would never want to live in a country where it was mandatory to vote in political elections.

To confirm you understand the article of la rinconada write a summary

Choose the sentence that is not logically connected in the paragraph. (1) one final effect of radio and tv on the language must must be noted. (2) there is no doubt that these great media of information have cut down considerably the time that used to be devoted to reading. (3) radio and tv may enhance the spoken word. (4) they tend to lower comprehension levels.