Study this site.
http://www.chompchomp.com/terms/subordinateclause.htm
I'll be glad to check your answer.
I aced my test because I remembered to study.
I aced my test
my test because
my test because I remembered to study
because I remembered
because I remembered to study
This sentence does not contain any subordinate clauses
http://www.chompchomp.com/terms/subordinateclause.htm
I'll be glad to check your answer.
To identify the complete subordinate clause, you need to look for a group of words that contains both a subject and a verb but cannot stand alone as a complete sentence. In this case, "because I remembered to study" meets those criteria.
The main clause of the sentence is "I aced my test," which contains a subject ("I") and a verb ("aced"). The subordinate clause "because I remembered to study" modifies the main clause by providing the reason or cause for why the speaker aced their test.