C is a question with a subject and verb. Do you see them?
A is an adverbial clause. If you remove the word "Since" it'll be a complete sentence.
A) Since the weather forecast is beautiful this weekend.
B) Let's ask our parents if we can go tubing.
C) Did you just say that?
D) A great dog, that’s what we have!
I can't determine if it's A or C.
A is an adverbial clause. If you remove the word "Since" it'll be a complete sentence.
This does not tell us the full meaning of the sentence. It does not answer WHAT.
An example of the correct sentence is.....
Since the weather forecast is beautiful this weekend, WE WILL GO TO THE BEACH.
A) "Since the weather forecast is beautiful this weekend." - This is a fragment because it begins with a dependent clause ("Since the weather forecast is beautiful this weekend") and does not contain a main clause that can stand alone as a complete sentence.
B) "Let's ask our parents if we can go tubing." - This is a complete sentence as it has both a subject ("we") and a predicate ("ask our parents if we can go tubing"), and it expresses a complete thought.
C) "Did you just say that?" - This is also a complete sentence as it has a subject ("you") and a predicate ("did you just say that?"), and it expresses a complete thought.
D) "A great dog, that's what we have!" - This is a complete sentence as it contains a subject ("we") and a predicate ("have"). Although it is a bit unconventional in structure because it begins with a noun phrase, it is still a complete sentence.
Therefore, the phrase fragment is A) "Since the weather forecast is beautiful this weekend."