A). The way an author presents a character to readers.
Explanation:
Characterization is demonstrated as the portrayal or representation of a character before the readers. The authors' employ direct or indirect characterization to provide details and description of a character from the introduction to its evolution throughout the narrative that reflects his/her thoughts or opinions that aids the readers to have an understanding of the work.
As per the question, the best definition of 'characterization' would be 'the way or manner the author presents a character' either directly(through direct characterization) or by reflecting their traits implicitly(through indirect characterization) that <em>assist the readers to form an opinion or judgement about him and elicit desired response</em>. Thus, <u>option A</u> is the correct answer.