Energy-efficient bulbs, for short

LEDS

["**Hint:** \"They light up modern homes without much heat or wasted power.\"\n\nThis hint suggests the efficiency and common household use of the answer while avoiding direct repetition of the original clue. It also subtly points to the technology (lighting) without giving away the abbreviation."]

**Explanation:** The clue *"Energy-efficient bulbs, for short"* leads to the answer **"LEDS"** through the following reasoning: 1. **Definition:** "Energy-efficient bulbs" refers to a type of lighting known for its low power consumption and long lifespan. LED (Light Emitting Diode) bulbs are a common example of such technology. 2. **Abbreviation:** The phrase *"for short"* indicates that the answer is an abbreviation. "LEDs" is the standard shortened form of "Light Emitting Diodes." 3. **Pluralization:** The clue implies multiple bulbs, so the answer is pluralized as "LEDS" rather than "LED." Thus, the answer neatly fits both the definition and the abbreviation hint in the clue.