What has caused the decrease in the number of people using email?

Texting, Social media, Skype.

Explanation:

I know this because people use email to get in contact with other people, now there are so many other ways to get in contact with people. For example most people only use email now days for work, coupons, school. Not as much as they use to. Alot has changed and there are many other ways to get in contact with other people.

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the correct answer will be d or c for me it may be different

answer: common sense was the pamphlet that thomas paine used to convince reluctant americans to abandon the goal of reconciling with britain and to accept that independence was the only option to preserve their liberty.