The introduction sets a clear context for the essay, but it could benefit from a more explicit thesis statement that outlines the main arguments you will explore. Consider stating how Priestly's message about responsibility will be unpacked through specific characters and events in the play.
In the first body paragraph, you provide a strong analysis of Mr. Birling's character and his capitalist views. However, the analysis could be deepened by exploring how Birling's statements not only reflect his personal beliefs but also serve as a critique of the societal norms of the time. Additionally, ensure that your textual references are integrated smoothly into your argument.
The second body paragraph presents a balanced view of Gerald Croft, but it lacks a clear connection to the overarching theme of collective responsibility. Strengthen this paragraph by explicitly linking Gerald's actions and attitudes back to the idea of being 'members of one body.' Also, consider discussing how Gerald's character represents the complexity of responsibility among the upper class.
The essay demonstrates a clear understanding of the characters and their roles in conveying Priestly's message about responsibility. The use of textual evidence is relevant and supports the arguments made, particularly in the analysis of Mr. Birling's character.
To achieve a higher mark, the essay should provide a more nuanced exploration of the characters' relationships to the theme of collective responsibility. Additionally, enhancing the analysis of the language and structure used by Priestly would strengthen the response. For example, consider discussing how Priestly's use of dramatic irony and dialogue contributes to the audience's understanding of the characters' flaws and the play's message.
Overall, the essay presents a thoughtful exploration of the theme of responsibility in 'An Inspector Calls.' While it effectively analyzes key characters and their actions, it would benefit from a more cohesive structure and deeper engagement with the text's language and form. Strengthening the connections between character actions and the central theme will enhance the overall argument.