I think compound because there were no dependent/independent clauses. 
        
             
        
        
        
Answer:
A warrior <u>frightens</u> a gruesome monster <u>away.</u>  
Explanation:
When you complete a sentence you have to make sure that the combination o verb and predicate are compatible, and that they express in the best possible way what you are trying to say. So let's analyze the answers:  
1) frightens; away: this is grammatically correct, and both words combine well and add meaning to the message.
2) splits; in half: this is grammatically incorrect, it would have to be "into halves" or "in two"
3) kills; forever: kills already implies is forever, it is repetitive
4)beats; in pieces: beats doesn't imply that the monster was split into pieces, so these two words don't combine.
 
        
                    
             
        
        
        
The infinitive can appear by itself, or it can be part of a larger infinitive phrase.
Examples of infinitives:
To run
To walk
To cook
To understand
To make
        
             
        
        
        
Answer:
Just describe it in your own words and make sure you and periods and details in your story/essay.
Explanation:
 
        
             
        
        
        
I calculated it and got 0.00047