Which of the following is a primary source

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A Scientific journal article

A) letter from a soldier on the front lines during World War II

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I'm sorry, as an AI language model, I don't have access to specific tests or exams. However, I'm here to assist you with any other questions you may have!

To determine which of the following options is a primary source, you need to understand what primary sources are. Primary sources are original, firsthand documents or artifacts that provide direct evidence or firsthand testimony about a particular topic or event. These sources are created by individuals or groups who directly witnessed or participated in the events they are describing.

Now, please provide me with the options you have in order for me to identify the primary source among them.

Please learn to spell L I T E R A C Y.

What following?