Which one of the following is the possibly correct output for the given JavaScript code?

function fun(length)  
{  
    const a=5;  
    for(let i=0;i<length;i++)  
    {  
        console.log(a);  
    }  
}  
fun(2);

In JavaScript, what will be used for calling the function definition expression:

In the following given line of code, the prototype representing the_____

functionx(){};