For each of the following observations, identify which one of the five factors is most important, and briefly explain how/why that is the case. (a) the ability to sustain aerobic exercise is limited by the amount of haemoglobin in the blood. (b) non-starch polysaccharides are large complex carbohydrates, and an important source of dietary fibre. their chemical energy content is similar to other carbohydrates like sucrose. why is it that some bacteria can process non-starch polysaccharides but these molecules do not undergo respiration via by human digestion?(c) potato is made edible by cooking it. (d) digestion is enhanced by chewing our food. [write your answer here)