When running a program, an instruction to the user to enter data for the program to process is known by what term?

The ________ element allows you to separate part of a document into a section and then apply a style to that section

Fill in the blank(s) with correct word

If s = “hello, world” (with exactly one space between the comma and ‘w’), what does s.indexOf(“,”) return?

What will be an ideal response?