Here's a breakdown:
* "Obrigado" - Used by males.
* "Obrigada" - Used by females.
* "Obrigada" - Used when addressing a group of people, regardless of gender.
You can also use "Obrigado" when addressing a mixed-gender group. It's considered more polite than using "Obrigada".
Let me know if you have any other Portuguese questions! 😊