Identify the following group of words as an incomplete or complete sentence. If the sentence is incomplete, identify the reason.

The girl riding her bike

incomplete sentence: no verb

incomplete sentence: no subject

complete sentence

incomplete sentence: subordinate clause

Answer: A) Incomplete sentence: no verb.

Explanation: A complete sentence must have a subject (the person or thing that performs the action) and a predicate formed by at least a verb (it can also have modifiers and complements). In the given group of words, we can see an example of an incomplete sentence, because "the girl ridin her bike" is a subject ("riding her bike" is a gerund that acts like an adjective modifying the noun "girl"), but it doesn't have a verb that indicates the action.

It is an incomplete sentence because it has no predicate.