He works until he is tired. The sentence has Noun Clause
Adjective Clause
Adverb Clause
No Clause

it has adverb clause= C i guess

Adverb Clause

Explanation:

An adverb clause is a clause that modifies/ adds meaning/ explaining a verb. So think of How?, Why?, When?, Where?, and To what extend?, Under what condition?

In this case, the sentence can be transformed to questioning form, "To what extend does he work?" and we'll get the answer, "He works until he is tired."

tu caminas en las clase de educacion fisica.

its translates: do you walk in in your physical education class?