Which of the screwdrivers listed has a tip surrounded by parallel fluted ridges resembling the ridges of a splined socket wrench?

Correct Answer: Option D — Torx

Torx fasteners utilize a six-point star-shaped pattern with parallel fluted ridges. This design provides superior torque transmission and prevents cam-out compared to standard slotted or Phillips heads. It is widely used in modern marine machinery and electronics to ensure secure fastening without damaging the screw head or tool.