Which revision clarifies the confusing pronoun in this sentence?

Read the excerpt from “man listening to disc.” to tommy potter for taking the time to join us on this breezy afternoon with his most unwieldy bass and to the esteemed arthur taylor who is somehow managing to navigate this crowd with his cumbersome drums. and i bow deeply to thelonious monk for figuring out a way to motorize—or whatever—his huge piano so he could be with us today. which of the following additional features would best enhance the reader’s understanding of this excerpt? a diagram showing the narrator’s route through the city a visual simulation of the man walking down the street audio samples of music by the specified musicians textbook chapters on the history of jazz musicians

She took up a scalpel and slit the monkey's abdomen, making a slow and gentle cut, keeping the blade well away from her gloved fingers. the spleen was puffed up and tough, leathery, like a globe of smoked salami. she did not see any bloody lesions inside this monkey. she had expected that the monkey's interior would be a lake of blood, but no, this monkey looked all right, it had not bled into itself. if the animal had died of ebola, this was not a clear case. she opened up the intestine. there was no blood inside it. the gut looked okay. then she examined the stomach. there she found a ring of bleeding spots at the junction between the stomach and the small intestine. this could be a sign of ebola, but it was not a clear sign. it could also be a sign of simian fever, not ebola. therefore, she could not confirm the presence of ebola virus in this animal based on a visual inspection of the internal organs during necropsy.

From the life cycle of a plastic bottle, what is the best definition for the word “toxin”?