Answer: A) to be sarcastically cutting.
Step-by-step explanation: the denotation of a word is its literal meaning, the definition that we can find in a dictionary, a word can have several denotations (or definitions), as we can see with the word "biting." From the given options, the definition of biting that best applies to its use in the given sentence is "to be sarcastically cutting" because the word is used referring to "oratory" so the speaker told his audience "This Fourth of July is yours, not mine" in a sarcastic and cutting way.