Question

melissas computer frequently has trouble with viruses. how can she fix this problem? she can try to avoid spilling on her computer she can install scanning software she can check for signs of debris in her computer she can reboot her computer

Explanation:

Avoiding spills and checking for debris address physical - related issues, not viruses. Rebooting may not remove viruses. Scanning software can detect and remove viruses.

Answer:

She can install scanning software.