Answer:
El gusto es mio means "my pleasure" and it is used when someone is trying to thank you for an action and you are just happy to help.
Mucho gusto means "nice to meet you" It is used when a person is being introduced. For example: "Hi my name is Carolina" "Nice to meet you Carolina im Fernando" "Hola mi nombre es Carolina" "Mucho gusto Carolina, mi nombre es Fernando"
Explanation:
