Answer:
d. Mr. Guest.
Explanation:
Robert Louis Stevenson's "The Strange Case of Dr. Jekyll and Mr. Hyde" revolves around the character of Dr. Jekyll and his alter ego, Mr. Hyde. The novel delves into the themes of good over evil, friendship, science, humanity, reason, deceit, supernaturalism, etc.
When Mr. Utterson was given a letter written by Hyde and addressed to Dr. Jekyll, he did not know much to do about it though he found it strange that the doctor had received such a letter. But when he approached Mr. Guest, who was<em> "a great student and critic of handwriting"</em>, Guest immediately began to find the similarity in the handwritings of Hyde and Dr. Jekyll. On further examination with an invitation, he found that the two are similar, only in that their slants are opposites.
Thus, Mr. Guests was the first to notice the similarity in Mr. Hyde's and Dr. Jekyll's handwriting.
