Which of the following statements regarding Pavlov is accurate

a) Pavlov was studying salivation in dogs as part of a research program on digestion.b) Pavlov was elated when his student first noticed that the dogs were salivating before tasting the food.c) Pavlov continued his Nobel Prize–winning research on digestion after documenting conditioning.d) Pavlov stressed the importance of speculating about the dog’s feelings toward the food.