Who are the proponents who made survey questionnaires focus on learning methods of the teachers and learning strategies of the students in English Teaching?

Answer 1

Maybe there's an analogy to be found in marketing. In order to sell a product, while still in the design stage, you have to have a good understanding of customers' tastes, habits, etc. (learning strategies). Once that is done, the product might need to be amended, redesigned, etc. (learning methods).