Hey There!
A percent can be used in a filename.
Answer:A) Syslog
Explanation: Syslog is the log for the messaging in the computing field.It acts as a separator for the different task that is related to messaging. The task usually are storing of message, production of the message through software,analyzing message, reporting it etc.
Other options given in the question such as WORM storage is for the storage technology,UTM is for the management for the threat situation and firewall logging is related with log/tables for firewall.
Thus, the correct option is option (A).
I hope this helps but cars, phones and computers.
AMPERE - a unit of measure for the flow of the current in a circut