Network Defense Essentials (NDE) Practice Exam 2025 – Your All-in-One Resource to Exam Success!

The correct choice highlights the role of temperature and humidity as significant environmental threats to electrical appliances. High humidity can lead to moisture accumulation, which fosters conditions conducive to corrosion of metal components within these appliances. Corrosion can cause electrical failures, decreased performance, and ultimately shorten the lifespan of the device.

In addition, fluctuations in temperature can exacerbate the effects of humidity on electrical components, leading to thermal expansion and contraction. This not only increases the likelihood of moisture intrusion but can also damage sensitive parts of electronic systems, further contributing to their deterioration.

While the other factors mentioned may impact electrical appliances, they do not directly cause corrosion as temperature and humidity do. For example, air pressure might influence how certain gases behave, but it doesn't typically lead to corrosion. Electromagnetic interference can disrupt the functionality of electronic devices, but it does not contribute to physical degradation of materials. Dust accumulation, while it can obstruct airflow and cause overheating, is less likely to lead to corrosion compared to the effects of moisture and temperature changes.