To answer this question, we need to understand the history of email. Let's go through each option to understand why it is correct or incorrect:

Option A) 1985 - This option is incorrect because email was actually sent before 1985. Option B) 1990 - This option is incorrect because email was sent before 1990. Option C) 1971 - This option is correct because the first email was sent in 1971. Ray Tomlinson, an American computer programmer, is credited with sending the first email while working on the ARPANET (Advanced Research Projects Agency Network) system. Option D) 1975 - This option is incorrect because email was sent before 1975.

The correct answer is C. The first email was sent in 1971.

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