ANSWER :
C. bird = 0.15
cat = 0.25
dog = 0.55
snake = 0.05
EXPLANATION :
From the problem, we have the following frequencies :
bird = 3
cat = 5
dog = 11
snake = 1
The total number of animals is 3 + 5 + 11 + 1 = 20
The relative frequency formula is :
That will be :