Answer: That Is A Sentence Fragment.
Explanation: "Waiting for your phone call." is a sentence fragment. It is missing a subject. A complete sentence has two main parts: a subject and a predicate. The subject is the person or thing that is doing the action, and the predicate is the action itself. In the sentence fragment "Waiting for your phone call.", there is no subject. We don't know who is waiting for the phone call.
To make the sentence complete, we need to add a subject. For example, we could say:
I am waiting for your phone call.
She is waiting for your phone call.
He is waiting for your phone call.
We are waiting for your phone call.
They are waiting for your phone call.
Once we add a subject, the sentence is complete and grammatically correct.
Here are some tips for identifying sentence fragments:
Look for a complete thought. A sentence fragment is a group of words that does not express a complete thought.
Look for a subject. A sentence fragment is missing a subject, which is the person or thing that is doing the action.
Look for a predicate. A sentence fragment is missing a predicate, which is the action itself.
If you are unsure whether or not a group of words is a sentence fragment, you can try adding a subject and a predicate. If the group of words makes sense after you add the subject and predicate, then it is a complete sentence.