Answer: D) capable of being heard
Step-by-step explanation:
Word audible originates from the 15th century, and was derived from the Latin word audībilis:
audī(re) + -bilis
In Latin, verb audire means to hear.
In the English language, the meaning of the adjective 'audible' is able of being heard, or loud enough to be heard.
For example: John let out a long, audible breath.