CompTIA A+ 220-1102 Practice Question

Insufficient RAM is the most likely cause of the described symptoms. When a computer does not have enough RAM to handle the running applications and processes, it may result in sluggish performance, as the system struggles to allocate memory to each task. This can also lead to application crashes and low memory warnings.

While malware infections and outdated device drivers can also cause performance issues, they are less likely to produce the specific combination of symptoms mentioned in the question. A failing hard drive may cause sluggish performance and application crashes, but it is less likely to trigger low memory warnings.