Final answer:
The most general antiderivative of the given function is f(x) = -ln|cos(x)|(4sin(x) - 8sec(x)) + C. So, the correct answer is A. f(x) = tan(x)(4cos(x) - 8sec(x)) + C.
Step-by-step explanation:
To find the most general antiderivative of the function f(x) = tan(x)(4cos(x) - 8sec(x)), we can use the formula for the integral of a product of functions. The antiderivative of tan(x) is -ln|cos(x)| and the antiderivative of cos(x) is sin(x). Therefore, the antiderivative of the product is:
f(x) = -ln|cos(x)|(4sin(x) - 8sec(x)) + C
So, the correct answer is A. f(x) = tan(x)(4cos(x) - 8sec(x)) + C.