C. Underline because it is not a kind of font. it is an effect.
It’s Debug. definition: “identify and remove errors from (computer hardware or software)”.
Here's some code that might help, assuming that you are using JavaScript.
e = "Hello"
if(e === "Hello"){
alert(":D")
}else{
console.log("Um.")
}
I think that the answer is curly brackets.
