Answer:
Step-by-step explanation:
Based on the information provided, it appears that there has been some sort of incident or emergency at the school. The presence of fire trucks and open windows suggests that there may be a fire or other hazardous situation that has caused the evacuation of the building. The fact that some students are coughing and being assisted outside also suggests that there may be some sort of air quality issue or exposure to fumes or chemicals. The comment about a science lab may indicate that the incident is related to an experiment or equipment malfunction in the lab. It is important to follow the news coverage and any official announcements or instructions from authorities to stay informed and ensure your own safety.