Respuesta :

Hello:
1. Spanish - Hola!
2. French - Bonjour!
3. Serbian - Zdravo!
4. Finnish - Hei!
5. Japanese - Kon'nichiwa!

Favorite language is something subjective - for me, it is the English language, but it can be any language for you. 
Hola- spanish
Bonjour- french
Hallo-German (i think)
Ciao-Italian
Ola- Portuguese

My favorite is Hola, only cause I speak spanish.