How can I make this script only choose 1 person?

I need help how can I make this script only choose one person and not like 3 or 4 . Code:

function selectCharacter(person)		--XD this got a wee-bit confusing! 	
local chosen = person[math.random(1,#person)] 	
if string.find(tagger.Value,chosen.Name) == nil then 		
if chosen:findFirstChild("ItStatus") ~= nil then 			
chosen:findFirstChild("ItStatus").Value = true 		
end 		
if chosen:findFirstChild("leaderstats") ~= nil then 			chosen:findFirstChild("leaderstats").Value = 0 		
end 		
local hum = chosen.Character:findFirstChild("Humanoid") 		
if hum ~= nil then 			
hum.WalkSpeed = 20 		
end 		
local parts = chosen.Character:GetChildren() 		
for i = 1,#parts do 			
if parts[i].className == "Part" then 				
parts[i].Anchored = false 			
end 	end 		
wait() 		
local tagscript = chosen.Character:findFirstChild("Torso"):findFirstChild("TagFlee") 		
if tagscript ~= nil then 			
tagscript.Name = "Murderer" 		
end 		
local tagblock = chosen.Character:findFirstChild("TagBlock") 		
if tagblock ~= nil then 			
tagblock.Parent = nil 		
end 		
dubHat(chosen) 		
tagger.Value = tagger.Value..", "..chosen.Name 
else 		selectCharacter(person) 	end end

To choose one person in the game randomly:

game.Players:GetPlayers()[math.random(1,game.Players.NumPlayers)]

Based on your selectCharacter function, it would take game.Players:GetPlayers() as the person argument, but since that is a constant reference (unless you intend to exclude some players from being chosen) you can just define it in the function instead of passing it to the function every time you call it.