Which of the following is a characteristic of electrochemical corrosion?

The characteristic involving the transfer of electrons accurately describes electrochemical corrosion. This type of corrosion occurs when a metal is in contact with an electrolyte, allowing for the movement of electrons between the metal and the electrolyte. During this process, the metal can lose electrons and undergo oxidation, leading to corrosion. This electron transfer is a fundamental aspect of the electrochemical reactions that drive the corrosion process, making it the key feature that distinguishes electrochemical corrosion from other forms of corrosion.

The other options highlight misconceptions about electrochemical corrosion. It can occur in a variety of conditions, including wet environments, and is not limited to dry conditions. Additionally, it is generally detrimental to metal structures, as it leads to degradation and loss of material integrity over time. High temperatures can influence the rate of corrosion, but electrochemical corrosion is not restricted to high-temperature conditions and can occur at ambient temperatures as well.