The Strange Case of Dr. Jekyll and Mr. Hyde is a novel by Robert Stevenson. The letter creates suspense by describing the mysterious person and not stating his identity.
<h3>Who is doctor Lanyon?</h3>
Dr. Lanyon is a medical practitioner and one of the closest friends of Jekyll. He is a doctor in London and is a very rational and materialistic person.
The letter in the story creates tension as the identity of the mysterious person is not revealed properly and it is more suspenseful as Dr. Lanyon expresses his feeling toward the visitor.
Therefore, option A. mysterious visitor, option C. not disclosing the identity of the mysterious visitor, and option D. by Dr. Lanyon's feeling the letter creates suspense.
Learn more about the Strange Case here:
brainly.com/question/12701725
