Final answer:
The health-care provider is concerned about Jeni's signs and symptoms because she is pregnant and experiencing a high fever, fatigue, and muscle aches. Ordering a blood sample for testing is necessary to determine the cause and provide appropriate treatment.
Step-by-step explanation:
The health-care provider is concerned about Jeni's signs and symptoms because she is pregnant and experiencing a high fever, fatigue, and muscle aches. These symptoms are typical flu-like signs and symptoms, but in a pregnant woman, they may indicate a serious condition such as influenza or another viral infection that could potentially harm the fetus. The health-care provider wants to ensure the health and well-being of both Jeni and her unborn baby, so ordering a blood sample for testing is necessary to determine the cause of her symptoms and provide appropriate treatment.