Answer: The correct answer is : Leko
Explanation: The “ellipsoidal spotlight reflector,” or ERS has received several names over the years. The stage designers have long called it "Leko". Likewise Leko is the abbreviated form of Lekolite which is an ERS brand that is used to illuminate a stage and refers to the to the half-ellipsoidal dome reflector within which the instrument's lamp is housed.
