Ans. D. Pseudomonasa. The image is showing inflamed ear along with drainage from the ear.b. In any immune compromised state e.g.: diabetes mellitus, chemotherapy, transplant cases, most common condition of ear is malignant Otitis Externa. It is mainly caused by pseudomonas, staphylococcus aureus etc.c. Infections spreads from floor of the ear canal to bones of the base of skull. This infection may damage the bones.