A.water.
An aqueous solution is a solution in water.
Hope this helped :)
When dissolved in water, acids donate hydrogen ions (H+). Hydrogen ions are hydrogen atoms that have lost an electron and now have just a proton, giving them a positive electrical charge. ... If a solution has a high concentration of H+ ions, then it is acidic.
Answer:
I think c biological processes
The solute has to be hydrophilic, (water loving).
