Final answer:
The verb 'estar' is used to indicate the location or state of a person or thing in Spanish.
Step-by-step explanation:
The correct verb to complete the sentence is está.
In Spanish, the verb 'estar' is used to indicate the location or state of a person or thing. In this case, the sentence is stating that Elena is in La Habana, so 'está' is the appropriate form of the verb.
Example: Elena está en la Habana.
Learn more about Spanish verbs