Waleska R. answered 03/16/19
Brazilian Portuguese Tutor with 10+ Years of Teaching Experience
Oi Christopher,
It depends on the gender of the person who says "Thank you",
Male genders will say "Obrigado", Female genders will say "Obrigada".
Other expressions:
Valeu! Valeu mesmo
Brigado/Brigada
Brigadinho/Brigadinha
Brigadão