Highly volatile...
...and airborne.
Definitely not the kindergarten teachers of my childhood!
Why isn't "Milyenek az magyar óvóbácsik?" good?
For one thing, the definite article is az before a vowel, but a before a consonant.
Of course! Thanks! That means that the answer would be correct with 'a' instead of 'az'?
Correct, but maybe not accepted (yet).