D because it the answer for your question because it
A ) The domain:
x ≤ -4 and x≥ 4 or: x ∈ ( - ∞ , - 4 ) ∪ ( 4 , + ∞ )
b ) f ` ( x ) =
c ) The slope of the line normal to the graph at x = 5
m = -1 / f `(x)
f ` ( x ) =
m = - 3/34
The answers are b and d because it’ll be negative like -11/3. It’s not e and a because their positive.