This is the 5482nd most frequent Russian word.
подготовлено
Prepared.
In this sentence, 'подготовлено' is used as a perfect passive participle in a neutral grammatical form, indicating that the essay has been made ready for a specific purpose.
Эссе уже подготовлено к публикации.
The essay is already prepared for publication.
Here, 'подготовлено' functions similarly but emphasizes that the preparation was a past, collaborative action, indicating the accomplishment of readiness.
Доклад был подготовлено совместно двумя авторами.
The report was prepared collaboratively by two authors.
This usage of 'подготовлено' conveys that the preparation occurred prior to a scheduled event, focusing on the timeliness and the state of readiness.