Concept:The symbol represents a light dependent resistor (LDR), also called a photoresistor.
Explanation:The arrows pointing towards the resistor symbol indicate light falling on the component.
An LDR is a resistor whose resistance changes according to the intensity of light incident on it.
When light intensity increases, its resistance decreases.
When light intensity decreases, its resistance increases.
It does not emit light, absorb heat, or depend on heat to function properly.
So this symbol is best described as a resistor whose resistance is light dependent.
Answer:D. whose resistance is light dependent.