4. A nurse is performing an assessment on a 75-year-old client admitted to the hospital. During the assessment

4. A nurse is performing an assessment on a 75-year-old client admitted to the hospital. During the assessment, the nurse observes the presence of multiple small, red to purple spots on the client’s skin, ranging in size from pinpoint to about 2mm in diameter. The nurse suspects the presence of petechiae. Which of the following conditions could potentially lead to the development of petechia? a. Mild sunburn b. Allergic reaction to new medication c. Normal ageing process d. Platelet dysfunction or low platelet count.