Keisha‘s conclusion for an essay on the Rosetta Stone reads. The Rosetta Stone is part of the collection of the British museum. The teacher asks her to rewrite the conclusion which mistake did Kesha make in her conclusion to the essay

She should have repeated her introduction
She added a random fact, instead of addressing major themes
She was too informal
She added too many many details

Keisha made a mistake in her conclusion by adding a random fact, instead of addressing major themes. It is important for a conclusion to summarize and reiterate the main points discussed in the essay, rather than introducing new information. Additionally, she should have maintained a formal tone and avoided including unnecessary details that detract from the overall focus of the essay.