Which theory does young's double slit experiment illustrate?
a. the wave theory of light
b. the particle theory of light
c. the dual nature of light
d. the classical theory of light

C. The dual nature of light

Explanation:

Young’s double slit experiment showed the dual behaviour of light (and matter) as a wave and as a particle.

Although currently it is known that light behaves as a wave and as a particle. It should be noted that many years ago it was thought light had only a corpuscular behaviour. In fact, the first to propose the corpuscular theory of light was Issac Newton, while Christian Huygens (who was contemporaneous with him) proposed the wave theory.

However, when Thomas Young performed  the double slit experiment with photons (light) the result was: Light is able to behave also as waves.

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.