Explanation: Directing staff to the help desk for technical issues exemplifies deference to expertise (D), relying on specialized knowledge. Resilience (A), operations sensitivity (B), and failure preoccupation (C) are less relevant. NAHQ highlights expertise deference in HROs.
NAHQ CPHQ Study Guide, Patient Safety Section, "High-Reliability Organization Principles"; NAHQ CPHQ Practice Exam, Safety Culture and Expertise.

Detailed Explanation:
Monitoring key metrics ensures that improvements are maintained, which is crucial for long-term success.
Option A: Monitoring key metrics for sustainment
Regular monitoring allows the team to track performance and adjust as needed to sustain improvements.
Option B:
Communication is important but less critical than metric tracking for sustaining success.
References:
CPHQ materials stress the importance of monitoring metrics as an essential part of sustaining quality improvements.

The median is the value that's exactly in the middle of a dataset when it is ordered12. It's a measure of central tendency that separates the lowest 50% from the highest 50% of values2. The steps for finding the median differ depending on whether you have an odd or an even number of data points123.
Based on the data provided in the image, we can calculate the median by arranging the vaccine counts in ascending order and finding the middle value. The counts in ascending order are: 5, 10, 16, 18, 30, 55, 71, 90,
114, 144, 195, and 200. Since there are an even number of data points (12), we take the middle value directly without averaging two middle values. So here it is option B - "55". This is consistent with the principles of median calculation123.

A Gantt chart is a type of bar chart that illustrates a project schedule1. This tool is used in project management, and it's particularly useful in the scenario described because it can help the team visualize their progress on different tasks1.
In this case, the team is at different stages with various tasks: they're one-fourth finished with identifying benchmark organizations, they haven't started identifying the current state, and they're halfway through collecting public data1. A Gantt chart can help them see all these tasks and their progress in one place, making it easier to manage their work and stay on schedule1.
While the other tools mentioned (Model for Improvement, Design of Experiments, Ishikawa diagram) can be useful in certain scenarios, they don't specifically address the need to visualize and manage progress on multiple tasks23. Therefore, the Gantt chart is the most appropriate tool to recommend in this situation1.