Answer:
A. his concern for Dr. Jekyll.
Explanation:
Robert Louis Stevenson's "The Strange Case of Dr. Jekyll" revolves around the story of a good doctor's dilemma in fighting against his alter ego. The plot deals with themes of good vs. evil, science, and how to duplicate humans are.
In the given excerpt from the story, we see Mr. Utterson revealing his inner thoughts about his concerns for Dr. Jekyll's safety and the harm Hyde can do to others, especially the doctor. He expressed his concern about how easily accessible Jekyll's house is to Hyde.
Thus, the correct answer is option A.
