Answer:
C
Step-by-step explanation:
Here, Gabrielle did not have her own speech, she used the outline (idea) of the speech her friend Ken. This used this speech and presented it as her own. Thus, Gabrielle is guilty of global plagiarism because she took a speech entirely from a single source and passed it off as her own.
Global plagiarism occurs when a speaker uses entire work of any other person passes it off as her own.