the way to get this answer would be to find the answer that has less undissolved mass because you have to find the one with higher solubility, which also means the one that can dissolve the most mass.
Homosapians started to use tools.
I think its c.trace fossils because this is an print of an organism that was of the animal, but produced from them, which means it could be put on a rock.
If the current fishing practices remain unchanged, it will take around 50 years.
