Answer:
A. Personal letters are primary source documents that may include both explicit and implicit information.
Step-by-step explanation:
-Primary sources are different documents and objects that are part of normal life and that can provide information and views about a particular event in history.
-Secondary sources are different types of documents that are created by someone that didn't experience the events that are being discussed.
-A personal letter is a document that someone makes about personal things to send it to someone else. These types of letters can provide a view of an event but they are subjective because they are written from the author's perspective and experience.
According to this, the statement about personal letters that is most accurate is: Personal letters are primary source documents that may include both explicit and implicit information.