How to print "Hello world" (with double quotes) in C language and not Hello world ( without double quotes) ????

Question

printf(" " Hello world" ") not working

Answer 1

printf("\"Hello World\"");
to print " use \ before "

Answer 2

Use the escape character \
print(" \"Hello World\" ");

Answer 3

Using \"

Answer 4

Why do we use escape sequence any one can explain this plss