Which among the following would affect enzyme activity by temperature: vinegar, salt, baking soda, or hot water

The factor among the options given that would affect enzyme activity by temperature is hot water. Enzymes are proteins that act as catalysts in biochemical reactions and they are sensitive to changes in temperature. When the temperature increases, the kinetic energy of the molecules increases, which can increase the rate of reaction. However, if the temperature is too high, it can denature the enzyme, causing it to lose its shape and functionality. The other options - vinegar, salt, and baking soda - would affect enzyme activity in different ways, but not specifically through temperature.