The answer is D or B we had the same question in our DCA and it was between those 2 but we only knew that it was between those two answer choices
You would add a 2 to every blank but 02 the reason why is 2 in the blank of h202 then makes that h404 while putting it in the other blank makes it h4 02 and add the other 02 then it makes it balanced. I’m pretty sure. It’s been a while since I did this in chemistry so don’t take my word for it but I’m pretty sure that’s how!
I agree with the above statement
Increased in occupational specialization in industrial field
