Based on the excerpt, this part of a letter is called the: C. body.
<h3>What are the parts of a letter?</h3>
Generally, there are four (4) main parts of a letter and these include the following:
In English literature, the body of a letter comprises a detailed information about the subject matter or topic being discussed.
Read more on body here: brainly.com/question/9069944
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<u>Complete Question:</u>
Read part of a letter
I believe our school should promote Earth Day
activities. We could encourage efforts to walk to school,
and we could dedicate the afternoon to tending our
school grounds.
This part of a letter is called the? heading. salutation. body. closing.
