The properly formatted entry on a "Works Cited" page from the option given is: (Option D).
A "citation" is how you notify your audience that some of the information in your work comes from another source.
It also provides your readers with the information they need to discover that source again, including author information, the title of the piece etc.
Hence, the correctly formatted citation form the list given is:
"How an Enslaved African Man in Boston Helped Save Generations from Smallpox." Erin Blakemore. History.com, A&E Television Networks, 1 Feb. 2019, https://www.history.com/news/smallpox-vaccine-onesimus-slave-cotton-mather. Accessed 8 October 2021.
Learn more about citations:
https://brainly.com/question/1089594
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