Question

which instrument splits the light to show the spectral composition of stars? spectroscope element decoder nuclear fusion meter electron light microscope

Explanation:

A spectroscope is an instrument that splits light into its component wavelengths to analyze the spectral composition of a light - emitting source like stars. The other options are not designed for this purpose. Element decoders, nuclear fusion meters, and electron light microscopes have different functions in different scientific contexts.

Answer:

A. Spectroscope