Answer:
The word that best completes the phrase is:
- Sus padres están <u>divorciados</u>.
Explanation:
For a substantive in plural form, in this case "sus padres", the correct Perfect Form for "divorciado" with the personal pronouns is:
1. Yo estoy <u>divorciado.</u>
2. Tú estás <u>divorciado.
</u>
3. Él está <u>divorciado.
</u>
4. Ella está <u>divorciada.
</u>
5. Ello está <u>divorciado.</u>
6. Nosotros estamos <u>divorciados.
</u>
7. Ellos están <u>divorciados.
</u>
How "los padres" could be replaced by the personal pronoun "ellos", the correct word is "divorciados", the other options don't apply because they are in singular form or don't have sense in the sentence.