The co-op picks a development toolkit from the job and the acceptance bar, then picks an algorithm (from a library, not hand-coded) that matches the labeled mite sheets they actually have. Which two workflow steps are those?

Pick a development toolkit from the job and the acceptance bar, then pick an algorithm from a library that matches the labeled mite sheets. Those two steps are select a framework, then select and build the algorithm. That is toolkit function, not a TensorFlow-versus-PyTorch product quiz.