Answer:
1. We use + past participle to say that an event or situation was possible in the past
<span>Famous for its spine-chilling screeches, the Tasmanian Devil is an Australian icon and is the world’s largest carnivorous marsupial. Once found across Australia, Tasmanian Devils are thought to have become extinct on the mainland before European settlement due to the introduction of dingoes.</span>
Do you have choices or idk maybe a passage title so I can read it?
Its C. comma. It helps break down the sentence into smaller parts but is still continuing on with the sentence.