Answer: Option (3) is the correct answer.
Explanation:
When a more reactive element or atom replaces a less reactive atom then this type of reaction is known as single displacement reaction.
In the given reaction, potassium iodide reacts with fluorine and results in the formation of potassium fluoride and iodine. 
Here, fluorine being more reactive displaces iodine from potassium iodide.
Therefore, it is a single replacement or displacement reaction.
 
        
             
        
        
        
They or on the southern hysteric watch it on youtube (latitude and longitude song 1 direction remix by the history teachers)
        
             
        
        
        
Answer:  "condensation reaction" .
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Losing eltron is the answer