Prepararán
Prepararán is a Spanish verb form. It is the third-person plural future indicative of the verb preparar. The verb preparar generally translates to "to prepare" or "to get ready" in English. Therefore, prepararán means "they will prepare" or "they will get ready."
This conjugation is used in sentences where the subject is a plural group of people or things,
The future indicative tense in Spanish, like in English, expresses an action that is expected to happen