Final answer:
Harrison is the character from a drama based on Susan Glaspell's play 'Trifles', included in the drama readings of the textbook.
Step-by-step explanation:
The character that is part of a drama among the given options is Harrison. This determination is based on the provided chapter overview of drama readings in a textbook. The drama section includes works such as 'Trifles' and 'The Verge' by Susan Glaspell, wherein Harrison is a character featured in the play 'Trifles'. This play is recognized for its exploration of gender dynamics and the role of women in society during the early 20th century. The character of Harrison does not appear in the other listed texts, making him unique to the drama genre provided.