Fact 1: Cells secrete acids and bases to maintain the proper pH for enzymes to work.

Fact 2: Acids and bases are electrolytes.

Given the two facts above, answer the question "What do cells secrete to maintain the proper pH for enzymes to work?" with the following options: 
- Energy
 - Chemical energy
 - water conservation
 - sweating
 - heat energy
 - aqueous solution
 - Organic compounds
 - electrolytes


 

        electrolytes 