Which one of the following statements is true? a. Water stabilises temperature. b. Unlike other liquids, water does not have cohesive properties. c. Water cannot act as a solvent. d. Water is non-polar.

The true statement is: a. Water stabilises temperature. Water has a high specific heat capacity, which means it can absorb and release a significant amount of heat without experiencing a large change in temperature. This property helps to stabilize temperatures in the environment and within organisms. The other statements are false: b. Water does have cohesive properties due to hydrogen bonding. c. Water is known as the "universal solvent" because it can dissolve many substances. d. Water is polar, not non-polar, due to the difference in electronegativity between hydrogen and oxygen.