Could someone please help me check these???

When using a green screen for filming, the 3d element Is:
A) The green screen
B) The actor or actress***
C) The specialized software
D) The Image on the green screen

How did the city of Venice Beach decide to manage graffiti
A) Allow artists to use certain walls for It***
B) Ban the sale of spray paint
C) Create strict fines for It
D) Exhibit It in museums

The overall Impact of a photographs features Is called what
A) Unity
B) Structure
C) Aesthetics
D) Emphasis
I'm stuck between A and C, Because I remember In my text that Unity Is how all the elements come together In a photo, and how good they all look together But aesthetics Is how good something looks

Auto engineer Is to film as ________ Is to book
A) Editor
B) Author
C) Reader
D) Publisher
For this one I'm a bit confused, maybe a helpful link, Or any advise or knowledge would be greatly appriciated :)

If a artist wants to use line to show depth, the line will
A) Be almost Invisible
B) be straight up and down
C) Move toward the center***
D) Go across the front of the work

3 answers

An auto engineer designs the vehicle. How does that compare to the people who execute the design in a finished product? Who designs an article or a book that is then executed (as in edited, set in type, printed, bound, etc.)?

Your other answers seem to be correct. If you are unsure what the word "unity" means in this context, go back to your text materials to clarify it. The overall effect is "aesthetics", yes. What makes up that overall effect?
Actually, I found out It Is Unity, Not Aesthetics for the third one I had put down, And, for the fourth one I put down, It Is, As Editor Is to book, Thanks for the help!!
It's been four years and there still hasn't been any help-