A DocumentDB database specialist wants to examine the execution time of operations performed on the cluster to investigate slow operations. What can the specialist use to perform this analysis?

Answer options:

A.DocumentDB profiler
B.AWS X-Ray
C.Performance Insights
D.Amazon Inspector

Answer: A
Option A is CORRECT because the DocumentDB profiler feature can be enabled to log the details (including execution time) of MongoDB operations to CloudWatch Logs. Then, CloudWatch Logs Insights can be used to analyze the data and investigate slow queries.
Option B is incorrect because AWS X-Ray is used for debugging and tracing requests in microservices applications.
Option C is incorrect because Performance Insights is a service specific to Amazon RDS.
Option D is incorrect because Inspector is a security assessment service, and not a DocumentDB performance analysis service.
Reference:
https://docs.aws.amazon.com/documentdb/latest/developerguide/profiling.html