Why do experts use one kind of explosive for steel columns and another for concrete columns

I think it’s the first option.

The second option isn’t true because the fabric protects people from the debris, it doesn’t actually explode the concrete

The third option isn’t true because steel and concrete need different explosives, not necessarily “more” If anything I think concrete needs more explosives because steel needs to be broken in one place

The last option could be true but I didn’t read anything about putting steel explosives in holes

Ibelieve the answer is going to be b

Iwas in a argument about a certain class grade with my teacher. it was a ‘a-’when i felt that i deserved a ‘a’. i showed him (my teacher) why i felt i derserved so. i questioned what i got wrong and showed him what i learned. i look back to that teacher with nothing but love and support because that’s the class that i actually learned the most. the moral of the story is to see where the other person is coming from and what they have done. also, when in a conflict, never attack the persons character. this will just make the argument end poorly.