Answer: C. He continuously makes eye contact with the audience.
Explanation: He doesn't have to say anything to get the audiences attention because he keeps eye contact with them.
D. its use of the natural cadences of human speech
Beowulf uses no weapons to kill Grendel.
The participle in this sentence is "sweating". It's a participle of the verb " to sweat" and it's a present participle: which we know because it ends with an -ing (past participles end with "-ed).