Answer
Its for the purpose of maintenance and readability
Explanation
A presentation-oriented markup web application generates interactive web pages containing various types of markup language.
Markup is a language designed for the purposes of processing definition and presentation. It specifies code for formatting, both the layout and style, within a text file. Markup describes the structure while the styling is how it looks. it uses the code to specify the formatting which are called tags.
I believe the answer is D. It makes more sense and is the most correct grammatically.
Hope this helped and pls mark as brainliest!
~ Luna
Answer it your own self everybody can't always give u the answers
When you send a letter or an email to somebody in the course
of your job, you might copy your boss. Even though he really
doesn't need the information in your correspondence, and you
don't expect him to answer you or take any action, you still want
him to know that you're doing your job, and how you're handling
this matter, and you want him to have the information available
IF he wants to see it.