QUICK ANSWER
"Por que" is a form of "por que", a phrase which is often translated as "why". "Qué clase te gusta más" is a form of "qué clase te gusta más", a phrase which is often translated as "which class you like the most". Learn more about the difference between "por que" and "qué clase te gusta más" below.
por que(
pohr
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (for which)
a. why
Estoy embarazada. Ese es el motivo por que te llamo.I'm pregnant. That's why I'm calling you.
b. for
Los premios por que competían no resultaban muy atractivos.The prizes they were competing for weren't very attractive.
c. that
La razón por que estoy aquí es por que quería pedirte perdón.The reason that I am here is that I wanted to say sorry.
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Al final los padres optaron por que su hija no participara en el concurso.In the end, the parents chose not to have their daughter take part in the contest.
Están ansiosos por que empecemos a trabajar en el proyecto.They're eager for us to begin work on the project.
qué clase te gusta más(
keh
klah
-
seh
teh
goos
-
tah
mahs
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (informal) (general)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
a. which class you like the most
Escribe qué clase te gusta más y por qué.Write down which class you like the most and why.
b. what your favorite class is
Alejandra me preguntó qué clase te gusta más, pero yo no tengo idea.Alejandra asked me what your favorite class is, but I have no idea.