Answer:D
Explanation:
Bleach is a hazardous material
There is loads of choices so I could not really tell what the best one is. Although I wouldn't know because I'm a guy so I cant really tell what the best one is. I did look that question up and loads showed up on the right of my screen.
Sorry
The first one is correct, because your skin is always the first thing anything comes incontact with.
I think the answer is 10,000,
because 500 mL and 20 is equal to 10,000.
500 x 20 = 10,000