To support your conclusion that the dog is digging in the snow because it is being trained in search and rescue, the two pieces of evidence that would best support this conclusion are:
- The trainer and dog are both wearing safety vests.
- The dog is digging deep down in one spot in the snow.
These pieces of evidence are relevant because safety vests suggest a training or working scenario, and the dog digging deep in one spot indicates it could be searching for something specific.