Answer:
Equally Likely & Unlikely
Step-by-step explanation:
If terriers make up 50% of the dog shelter that means the 50% that's left is split between the labradors and golden retrievers and the way they're split can be in any way so there's a way anyone can pick any kind of dog no matter the probabilities.
(Also go easy on me if I'm wrong, I'm only in 7th grade)