An element or its compound is first _ to get its _ spectrum by a spectrometer.

Explanation

Option A: Freezed, continuous, is not correct because freezing a substance would solidify it, making it difficult to volatilize and analyze using a spectrometer. Additionally, continuous spectra are produced by the emission or absorption of a continuous range of wavelengths of electromagnetic radiation and are not specific to individual elements or compounds.Option B: Freezed, line, is not correct because freezing a substance would solidify it, making it difficult to volatilize and obtain a line spectrum. Line spectra are produced by the emission or absorption of discrete wavelengths of electromagnetic radiation and are specific to individual elements or compounds.Option C: The compound is first volatilized as it must be processed in a gaseous state since the energy levels of the electrons would be influenced when they are brought nearby. Moreover, the atoms or ions, within the compound, give off a line spectra. Spectral lines are produced by transitions of electrons within atoms or ions.Option D: Volatilized, continuous, is not correct because continuous spectra are not specific to individual elements or compounds, as mentioned earlier.