Final answer:
In a Spanish conversation, the suitable response to 'Mucho gusto' is 'El gusto es mío' or 'Encantado/a'.
Explanation:
The correct missing word is 'a. Encantada' based on the conversation provided.
In Spanish, when someone says 'Mucho gusto', a suitable response would be 'El gusto es mío' or 'Encantado/a' to express pleasure in meeting the person.
Therefore, in this context, 'a. Encantada' is the appropriate choice as it aligns with the polite exchange of greetings.
Learn more about Spanish greetings and responses
