If combining Vinegar and baking soda causes chemical bonds to form, then which action will cause chemical bonds to form?

Answer choices:
- A compound that donates proton
 - igniting fuel and oxidiser
 - nuclear reactions
 - Mixing baking soda and vinegar
 - By wind and rain
 - heat and pressure
 - converting electricity to heat
 - production of energy

 

    Mixing baking soda and vinegar      