Answer:
B. 4x-12
Explanation:
Use PEMDAS!
Parenthesis
You can't do -x+5, so in order to get rid of it, distribute the -4.
8-4(-x-5) = 8+4x-20
Exponents
There are no exponents
Multiplication/Division
There is so multiplication or division
Addition/Subtraction
The only addition or subtraction you can do is 20 - 8.
8+4x-20 = 4x-12