Help me please .Thank you for all

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Which planet do you think would be easiest for humans to colonize some day?