19) The focuses of biodegradation tests are listed below. Which one is not among these focusses? a) The amount of degradation during a given period of time b) The secretion pathway of the degradation...

Extracted text: 19) The focuses of biodegradation tests are listed below. Which one is not among these focusses? a) The amount of degradation during a given period of time b) The secretion pathway of the degradation products and leachables c) The nature of the degradation products, d) The origin of the degradation products (e.g., impurities, additives, corrosion products, bulk polymer)