Answer :
This sentence is part of the exposition because it introduces a character. The Introduction is the first part of a reading piece.
What is the introduction?
The Introduction is the first part of a writing piece where the writer introduces the reader to the topics attained in this reading piece.
For example, in a scientific publication, the introduction deals with the subject of study and the previous bibliography.
The Introduction is always a fundamental part of any type of essay and/or reading piece.
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