4 3. The body's __ system defends against infection and disease. Mark only one oval endocrine immune cardiovascular cognition digestive 4. Astress-related disorder people experience after an extremely frightening or upsetting event is __ Merkonly one oval 5 points positraumatic stress disorder (PTSD) C reproductive systom iii stress hormones stress-related disorder 6. 5. Keeping a to do list or avoiding procrastination are strategies for __ a stress reduction practice. Mark only one oval progressive muscle relaxation stress manogement time management visualization 5 points

## Step1<br />For question 3, we need to identify the body system that defends against infection and disease. The immune system is responsible for this function. It is a complex network of cells, tissues, and organs that work together to defend the body against harmful invaders such as bacteria, viruses, and other pathogens.<br /><br />## Step2<br />For question 4, we need to identify the term for a stress-related disorder experienced after an extremely frightening or upsetting event. The correct term is Post-Traumatic Stress Disorder (PTSD). PTSD is a mental health condition that's triggered by a terrifying event — either experiencing it or witnessing it. Symptoms may include flashbacks, nightmares, and severe anxiety, as well as uncontrollable thoughts about the event.<br /><br />## Step3<br />For question 5, we need to identify the term for strategies like keeping a to-do list or avoiding procrastination. The correct term is time management. Time management involves organizing and planning how much time you spend on different activities to become more efficient and effective in your tasks.