I need help with this question

Please see:https://phet.colorado.edu/en/simulation/wave-interference

In this experiment you will try to determine how to control the interference fringe pattern from a double-slit. To get started you may want to follow the directions below, but you don't have to. You can use light, sound, or water waves to investigate interference, but the directions below are specifically for light. Play around with different locations of the slits, slit widths, frequency, and amplitude. The main question to try to answer is:

Which parameters affect the interference fringes and how do they affect them?

Suggested starting setup:

• Use the Slits tab
• Leave the frequency in green light. Activate the screen and the Intensity graph.
• Activate the 2-slit barrier. Set the slit width to 460 nm. Set the barrier distance to 2500 nm Set the slit separation to 2000 nm.
• Un-pause the animation.
• Change parameters one at a time and try to observe the changes in the fringe pattern, specifically the location of the fringes (bright fringes = maximum peaks of constructive interference).

Post your conclusions with screenshots.

Suggested questions to consider:

a) What happens to separation of bright fringes if you change the frequency of light, going from blue to red?

b) What happens to the location of the bright fringes when you change the slit separation or width?

Also

I would like you to post some visual evidence of Interference, Refraction or Diffraction of light (or other waves) Photos or videos taken by you personally are allowed. No reposting of found stuff on the web!

and

Try to find original examples so stay away from Pencils in a glass of water or CD/DVD diffraction of light.