Respuesta :
Answer:
A
Explanation:
The letter is a primary source, while the encyclopedia entry is a secondary source.
The difference between a letter written by an eyewitness to an event
and an encyclopedia entry about the same event is that the letter is a primary source, while the encyclopedia entry is a secondary source. (A)
What is a letter?
A letter is a written, typed, or printed communication, sent in an envelope by post or messenger.
What is eyewitness?
Eyewitness is a person who has seen something happen and can give a first-hand description of it.
What is an encyclopedia?
An encyclopedia is a book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically.
To learn more about letter and encyclopedia refer
https://brainly.com/question/13943501
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