Media a, b, c, and d represent different mediums. the phenomenon in this diagram is best described as
a) diffraction
b) dispersion
c) reflection
d) refraction

D)refraction

Step-by-step explanation:

causes an object to appear bent as waves pass from one medium to another. The arrows in this diagram appear bent and are passing from one medium to another, so the diagram is showing refraction.

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1