I can't see your image but everyone chooses for different reasons. Pick the one you're gonna love the most.
My advice , for what it's worth , is to let the puppy choose you , by that I mean choose the one who looks like they want to interact with you the most . Observe the puppies first and I have no doubt that one of them will make themselves known to you more .
Often the breeder asks you a lot of questions and assigns the puppy she thinks is best for you. She knows them a lot better than you can tell from a photo or a couple of visits. Hah, let the puppy pick you. Oban picked us. Oban picks everybody. He is outgoing, confident, brave and sure of himself. He will go to anyone. He comes back, and I was warned but he has been quite the challenge. The breeder did grill us but I had one of her pups before, did a lot of training and the breeder knows me. We were allowed to have Oban but as one trainer put it, I've learned more about training from him because of his challenging nature than any other dog I've had. FWIW we did the Volhard Puppy Test with the breeder. WE gave up on it, could tell more from observation, but it was interesting.
As @Snowshoe says, I the breeder is good they should be able to suggest the puppy for you from discussing what you are looking for in a puppy/dog etc. From my reading it would seem that puppy tests do not hate the support of most behaviourists as there are so many other things to consider when being tested - being tired, having just woken up, being hungry, thirsty, needing to pee etc. etc. can all impact on behavioural response. My general advice if choosing a puppy in a litter is to ignore the one who rushes up to you/is in your face (can be an over-confident puppy) don't choose the one that hangs back (can be more timid) . I chose one of my puppies from photos an lots of consultation with the breeder as due to distance and personal circumstances I was unable to is it prior to collection day - worked for me with no problems
If getting a puppy from a breeder (vs. rescue) I'd much, much rather very carefully choose the breeder and then have the breeder choose the puppy for me. They see the dogs every day and know their personalities best. Of course, this is putting a lot of trust in the breeder, but that's why the "very carefully choose the breeder" part is important. Of course I'm speaking with my grand experience of one time getting a puppy from a breeder, so take that advice as you will. But that one time it sure did work out perfectly for me.
We chose Hattie because she chose our son. We chose Charlie our rescue boy because he chose the same son. Very scientific choices made by us x
Oh our choices were made terribly. All rescues. Belle I picked from a photo on a website, got a call after 7 days to to say she was available - and they handed me the lead & I signed the papers. She was terrified. Scooby, we had a call from a chap who couldn't keep him due to a disagreement with one of his resident dogs - he arrived an hour later, quiet & subdued. Coco was better, we picked him from his photo, then met him, and had repeat meets in a field with Belle over a period of 3-4 weeks - at least we sort of knew him by the time he came home.
