What is the ellos form of verb hablar in present perfect tense?

The "ellos" form of the verb "hablar" in the present perfect tense is han hablado.

Here's how it breaks down:

* han: This is the present perfect tense of the auxiliary verb "haber" for the third person plural (ellos).

* hablado: This is the past participle of the verb "hablar."

So, han hablado means "they have spoken" in Spanish.