|A) darkness||B) red light|
|C) white light||D) yellow light|
As far as the rate of photosynthesis is concerned, it is fastest in white light making the rate of photosynthesis maximum.
After White, We Have Violet Light Where Photosynthesis Occur To A Higher Extent as It Has The Shortest Wavelength Hence Has The Max Energy.
So The Order Is :: white>violet>blue.