Because it shows evidence to their claim
Jekyll's letter in the excerpt from The Strange Case of Dr. Jekyll and Mr. Hyde reveals that D. Jekyll is in a desperate situation and needs help from Lanyon.
Answer:
The word serene describes the look of a person who is calm and unworried. She had a serene look on her face. His face was serene in sleep.
Explanation:
Hope this helps~
Have a great day~
~Zero~
Coordinating conjunctions connect phrases or clauses.