D. Prototyping. This is because a prototype is basically a replica of the original one and in order to find out what all we need to add in our original, material selection plays a vital role in prototypes.
I think Backslash, if I'm not mistaken.
Answer:
A PrintWriter reference variable named output that references a PrintWriter object is as follows:
//PrintWriter output = new PrintWriter(outfile);
PrintWriter output = new PrintWriter("output.txt");
The statement that writes the string "Hello World" to the file output is as follows:
//output.print(message)
output.print("Hello World");
Explanation: