B. Mary experienced ... that made her worry about missing the concert. 1) dizziness and fatigue. 2) coughing and sneezing. 3) a sore throat. 4) a headache and body aches.

The correct answer is **4) a headache and body aches.** **Explanation:** The text mentions that Mary woke up with a strange feeling and that her head was pounding and her body felt heavier than usual. This indicates that she was experiencing a headache and body aches, which contributed to her worry about missing the concert.