Final answer:
To enhance communication performance, we should choose to Modify or Enhance Communication, which can include adjusting the amplitude (volume) and frequency (pitch) of speech.
Step-by-step explanation:
We are able to provide services to modify or enhance communication performance By Modifying or Enhancing Communication. This can be achieved through various methods, such as adjusting the amplitude or frequency of our speech. For example, if someone wants to be heard more clearly over background noise, they might increase their volume, which corresponds to the amplitude. Similarly, changing the pitch of one's voice, i.e., how high or low the vocal tone is, involves modifying the frequency.
To clarify the given options from the question:
b. amplitude, by lowering the frequency at which you are speaking is incorrect because amplitude is related to volume, not frequency.
c. frequency, by lowering the volume at which you are speaking is also incorrect because frequency is related to pitch, not volume.
It's important to understand that various verbal and non-verbal techniques, including the use of technology such as hearing aids or speech synthesis software, may also be utilized to enhance communication.