Your company's IT department has received complaints from employees about their computers running slowly. Upon investigation, you find that the hard drives on these computers are almost full, which could be negatively impacting the system's performance. What disk management task should you perform first to address this issue?
Clean up unnecessary files to free up space on the hard drives
Upgrade the hard drives to a higher RPM model for better performance
Increase the size of the existing partitions on the hard drives
Convert the file system from FAT32 to NTFS to improve efficiency
Defragment the hard drives to optimize data access