B) 12 ft. to 25 ft.
Since they are in different grades they are likely in different classes, the only time their day would overlap might be in cafeteria or lunch time, and even then they wouldn't sit close to eachother.
Answer:
clostridium perfringens
Explanation:
clostridium perfringens is food bacteria that can invade your dishes if the right preparation and refrigeration isnt done
Some problems could be if they see an increased heat rate that means your working out but if you don’t see a usual heart rate this might be bad
A recycling should be it! Sorry if its wrong