Answer:
Conoces
Explanation:
¿Tu conoces la Ciudad de Mexico?
What do you mean..? The description of it? Image?
1. tiene (possessive description)
2. sepa (non-realistic description; an ideal)
3. está (possessive; the clinic (not a clinic))
4. ayude (ningún, alguien, and nadie are always subjunctive)
5. pueda (an ideal; a surgeon (may or may not exist) and not the surgeon)
