The correct answer is option B) show ip nat statistics.

The "show ip nat statistics" command is used to display the summary of the Network Address Translation (NAT) configuration on a Cisco router. This command provides important information about NAT translations, counters, and other related statistics.

Here is a detailed explanation of each aspect of the command:

1. Show Command:
The "show" command is a widely used command on Cisco routers to display various information, including the status and configuration of different components.

2. IP NAT:
The "ip nat" keyword specifies that we want to view information specifically related to Network Address Translation (NAT). NAT is a process that allows multiple devices on a private network to share a single public IP address when communicating with devices on the internet.

3. Statistics:
The "statistics" keyword indicates that we want to view statistical information about the NAT configuration. This includes counters for translations, hits, misses, failures, and other relevant statistics.

Benefits of using "show ip nat statistics" command:

1. Overview of NAT Configuration:
The command provides a summary of the NAT configuration, allowing network administrators to quickly review and verify the current NAT settings on the router.

2. Troubleshooting:
By examining the statistics, network administrators can identify any anomalies or issues with NAT translations. This information can be vital for troubleshooting NAT-related problems and optimizing the configuration.

3. Performance Analysis:
The counters provided by the command give insights into the efficiency and effectiveness of NAT translations. Network administrators can analyze the statistics to determine if any adjustments or optimizations are required.

4. Monitoring NAT Usage:
The command allows administrators to monitor the usage of NAT translations. By tracking the hits and misses, administrators can gauge the demand for NAT and make adjustments accordingly.

In conclusion, the "show ip nat statistics" command is used to display a summary of the NAT configuration and provide important statistics for troubleshooting and performance analysis. It is a valuable tool for network administrators managing NAT on Cisco routers.