Answer: Line Emission Spectra
Explanation: Line emission spectra is produced when an electron from its ground state gets promoted to the higher state known as the excited state .
When it reaches the excited state , it comes back to the ground state and line emission spectra releases when on the path to returning the ground state, the electron moves in between the molecular energy levels.
Incandescent means which can generate light by runing electrical current.
Thus the light emitted by an incandescent element produces Line Emission Spectra.