I want to know the answer to the following question:
Which part of the incandescent light bulb is heated?
All the background I'm provided with is that "An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated to a high temperature, by passing an electric current through it, until it glows with visible light (incandescence).". Is that enough to answer the question?
Answer: yes