The Strange Case of Dr. Jekyll and Mr. Hyde is a mystery novel. The excerpt connects to the theme as Dr. Jekyll is alone in his unfortunate condition.
A theme is a message of the story that the writer wants to deliver to its readers. In this story repression, evilness, lies, and deceit are portrayed. Dr. Jekyll feels trapped when he cannot control Mr. Hyde his other side portrays evilness.
He found himself isolated and alone when he tries to hide the actual identity of Mr. Hyde from the world and locks himself away. The secret of his other identity getting exposed makes him isolated and detached from society.
Therefore, the theme of the story connects as option C. Jekyll is isolated in his miserable condition.
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