This cross will yield four phenotypes in the 1: 1: 1: 1 ratio:
rryy x rryy
rryy x rryy
rryy x rryy
rryy x rryy

The answer would be:

RrYy x rryy

Here's more about your question:

The Punnet square for this cross is attached below.

As you can see the results will be:

RrYy = 4/16 = 1/4

rrYy = 4/16 =  1/4

Rryy = 4/16 = 1/4

rryy = 4/16 =  1/4

All four phenotypes have a 1/4 chance of occurring. So the ration between them would be 1:1:1:1

i am positive it is c. condensing but i may be wrong

one would be wind another would be water density