Final answer:
Memory lapses are an example of a cognitive symptom of stress, affecting the mental processes such as thinking, perception, and the ability to remember. Therefore, the correct option is D.
Step-by-step explanation:
An example of a cognitive symptom of stress is memory lapses. These may include disruptive memory loss, confusion about time or place, difficulty planning and executing tasks, and issues with problem-solving and language. Cognitive symptoms of stress are related to the mental processes of thinking, perceiving, and remembering. Stress can impact cognitive function, making it difficult to concentrate or make decisions, and can potentially contribute to cognitive decline over time.