according to dutch scientist christiaan huygens, what was light made of?\natoms\nparticles\nwaves\nelectrons

Brief Explanations:

Christiaan Huygens proposed the wave - theory of light. He suggested that light is made up of waves. Atoms are the basic units of matter in a different context. Particles were more associated with Newton's early view (corpuscular theory) but Huygens' work was on waves. Electrons are sub - atomic particles and not what Huygens proposed light was made of.

Answer:

waves