The correct form of the present perfect tense is Uds. han venido aquí muchas veces.
Present Perfect Tense
It is a tense that expresses actions influenced by the present, that is, these actions are still happening or have been completed recently.
It is represented by Subject + have/has + past participle.
Example: Mary has studied.
The question asks for an answer for the verb "venir" for the third-plural pronoun (uds= ustedes). Then you need to know the conjugation for the verb haber en el present.
yo he
tú has
él/ella/usted ha
nosotros/nosotras hemos
vosotros/vosotras habéis
ellos/ellas/ustedes han
The exercise asks the conjugation for the verb venir for ustedes. From the previous explanation, you can see that the answer is han venido.
Read more about the present perfect tense here:
https://brainly.com/question/704855
