Answer:
B = 21.04%
Explanation:
We are given that it is a dog in St Louis
Add up the percents of dogs in St Louis for a total
2.65+2.46+3.67+2.97
The total is 11.69
To find the probability that it is a mastiff
P (mastiff) = % mastiff/ % total
2.46/11.69
=.21043627
21.04%