An "electronic" steering system lacks which of the following components?

An electronic steering system, often referred to as electric power steering (EPS), operates differently from traditional hydraulic power steering systems. In an EPS system, the steering assist is provided by an electric motor rather than relying on hydraulic components.

This is why it lacks a power steering pump, which is essential in hydraulic systems to circulate fluid. Since there's no hydraulic fluid used in an electronic system, it also does not require power steering fluid. Additionally, without fluid, the power steering hoses that would typically be necessary to transport that fluid are absent as well.

Thus, the correct answer encompasses all these components—power steering pump, power steering fluid, and power steering hoses—highlighting the fundamental differences between hydraulic and electronic steering systems. The absence of all these components is what distinguishes electronic systems from their hydraulic counterparts, making "all of the above" the appropriate choice.