If i understand the task correctly, ellos would be the right answer
A. salido is the correct past participle for the Spanish verb salir.
Past participle is formed by adding the suffixes -ado, or -ido to the root of the verb, depending on the last letter of the verb.
Explanation:
es la b xd smsmsmsosplwlwlwkwjbgyuve7yvs7gyyisguigsg8usbou