I'm having some trouble with figuring out this question. Can anyone please help.

Q. The extent to which waves bend around edges of an opening is determined by?

A the width of the opening divided by the wavelength
B the wavelength divided by the width of the opening
C the wavelength multiplied by the width of the opening

Thank you

A and B are fundamentally the same -- just reciprocals of each other. C is not the answer. The correct answer is either A or B, depending on how your teacher taught you. I'd pick A.