Question

while playing soccer, carla slides across one of the lines on the field. when she stands up, she dust off?
calcium hydroxide
ammonium hydroxide
zinc hydroxide
potassium hydroxide

Explanation:

Soccer fields often use calcium hydroxide (lime) to mark lines. It is a common and safe - for - sports - field use substance compared to the others which are more hazardous or less commonly used for this purpose.

Answer:

calcium hydroxide