You need to diagnose your slowly running cluster and you decide to regenerate the error state on another cluster. As a part of the process, you have performed below two steps: Gathering data about the issue.
Validating the HDInsight cluster environment
Which of the following is the right next step that you would follow to achieve the goal?

Answer options:

A.Reviewing the environment stack and versions
B.Checking the configuration settings.
C.Checking the health of your cluster.
D.Examining the cluster log files.
E.Find K-mean for the clusters

Correct Answer: C 
Reproducing the error state on another cluster typically involves the following steps: Gathering the data regarding the issue.
Validating the HDInsight cluster environment.
Viewing the health of your cluster.
Reviewing the environment stack & versions.
Examining the cluster log files.
Checking configuration settings.
Reproducing the failure on another cluster.
Option A is incorrect. Reviewing the environment stack and versions is one of the steps from the process but it is not the right next step to perform.
Option B is incorrect. Checking the configuration settings is one of the steps from the process but it is not the right next step to perform.
Option C is correct. viewing or checking the health of your cluster is the right next step to perform.
Option D is incorrect. Examining the cluster log files is not the right next step in the process.
Option E is incorrect. Reproducing the error state does not involve such a step.
Reference: 
To know more about troubleshooting the clusters, please visit the below-given link: 

https://docs.microsoft.com/en-us/azure/hdinsight/hdinsight-troubleshoot-failed-cluster