Answer:
I'm pretty sure it's the 4th.
Explanation:
 
        
             
        
        
        
The correct answer is II. "With ears forward/with eyes watchful. Hope this helps.
        
                    
             
        
        
        
avail: use/take advantage of
discourse: <u>speak</u>/write/communicate or spoken/written communication
interjection: exclamation, addition of emotion in <u>speaker's</u> words
voluble: <u>speaking</u>/<u>spoken</u> fluently