Answer:
Since this question has so many pairings to make, I will give you the pairings and try to give a small explanation, as needed.
A. Non-infectious disease: 2. Cannot spread... A disease like cancer, for example, cannot be spread to other people, and thus is known as non-infectious. It is not caused by a pathogen.
B. Bacterial infection: 5. Caused by the reproduction of small infecitous agents... Unlike the other options, bacteria normally affect the body through the toxins they produce and use the body´s environment to reproduce.
C. Fungal infection: 6. Caused by the multiplication of fungal organisms... says it all. This infection is caused by fungus.
D. Viral infection: 4. Caused by the multiplication of a small infectious agent... viruses are the most unusual of all pathogens. They always infect by injecting their genetic material into host cells, reproduce that way, and then kill their host.
E. Infectious disease: 3. Caused by the spread of harmful microorganisms. Literally, pathogens. Pathogens are microorganisms that always cause disease that can be spread.
F. Disease: 1. The improper functioning of the body brought about... Disease is not necessarily a viral one, or caused by a pathogen. It is any abnormal function of the body that affects it negatively.
G. Carcinoma: 10. A cancer that affects te skin and tissues that covers or lines the organs. This is the very definition of a carcinoma.
H. Lymphoma: 11. A cancer that affects the tissues of the lymphatic system... Also the very definition of lymphomas.
I. Chemotherapy: 13. A type of therapy that destroys cells by injecting... These are all chemical agents that seek to destroy abnormally growing and developing cells, be them cancerous or not.
J. Protozonan infection: 7. Caused by microscopic parasites. Nothing else to explain here. This is the definition of a protozoan infection.
K. Carcinogens: 12. Cancer-causing agents... like U.V light without proper screen, that affect the DNA´s composition, and thus, affect the proper functioning of cells. These agents have the power to affect our genetic makeup and the proper growth and function of our cells.
L. Sarcoma: 9. A cancer that affects connective tissue, supportive tissue and blood vessels. The very definition of sarcoma. No need for more.
M. Cancer: 8. A disease characterized by the unrestrained growth of abnormal cells... It is also important to know that these abnormal cells were not originally so. They become this way due to the expression of certain genes that generate an abnormal function and growth of the normal body cells. This is why the immune system does not fight against cancer.
