Misspelled; extinguish a fire. A is most fires, B is liquids (oil/petrol/etc), D is metals. I learned very young not to throw water on a fire if I didn’t know

Misspelled; extinguish a fire. A is most fires, B is liquids (oil/petrol/etc), D is metals. I learned very young not to throw water on a fire if I didn’t know what was burning. Honestly, there’s a lot to learn, but childhood is long! Well resourced parents can teach nearly all of this by 15 (driving and speaking another language well are more challenging).