This is an opinion question. so based off of what you learned and come up with your own opinion.
Answer:
A choice.
Explanation:
You may notice some people, movies, etc using green screen on behind-the-scene.
This is because once the background is green or in one color, the person who edits photo or video can clear out the green background and makes the video really realistic.
So what happens if we don't use one color background? Well, it'd be super hard to edit the background and the video might come out weird and messy.
Answer: D
Explanation: Columnar monuments were used only by the Romans until the 14th century.
Answer:
The Web Developer, most of the time they are the ones that build the website and do the coding for it.