In the above scenario, this could be pulmonary embolism case because Mr. Jackson's condition and their symptoms shown towards the pulmonary embolism.
In pulmonary embolism, an artery present in the lungs block by a substance that can be transfer from any part of body through blood circulation and stuck in the artery of lungs and due to this shortness of breath, sever chest pain during coughing or breathing in.
So, the above condition of Mr. Jackson shows pulmonary embolism.
I think the correct answer is nucleic acid. There four major classes of macromolecules and these are lipids, carbohydrates, proteins and nucleic acids. Among these nucleic acid would best fit the definition. Examples of nucleic acids are DNA and RNA.
