In order to better monitor the traffic going to and from network interfaces in your VPC, you have enabled the VPC flow logs. You need the following.
Automatically deliver the logs to a central place for management.
Perform SQL queries on the data.
Visualized the logs using a Business Intelligence (BI) service on AWS.
Which below services can help achieve this requirement?

Answer options:

A.Amazon DynamoDB -> Amazon Athena -> Amazon QuickSight
B.Amazon CloudWatch Logs -> Amazon Elasticsearch -> AWS Glue
C.Amazon S3 -> Amazon Athena -> Amazon QuickSight
D.Amazon S3 -> AWS CloudSearch -> AWS X-Ray

Answer : C
Option A is incorrect because DynamoDB does not satisfy the 1st requirement as it is not suitable to store the logs.
Option B is incorrect because AWS Glue is a fully managed extract, transform, and load (ETL) service and is not suitable to visualize the VPC flow logs.
Option C is CORRECT because using Amazon S3 can store the logs on a centralized location, Athena can perform the SQL queries on the data, and QuickSight can visualize the logs and provide BI services.
Option D is incorrect because AWS CloudSearch is a search solution for your application and is not ideal for data queries. Also, AWS X-Ray is an application performance management service that enables a developer to analyze and debug applications in the Amazon Web Services but does not provide visualization and BI capabilities.
Reference:
https://aws.amazon.com/blogs/mt/analyzing-vpc-flow-logs-got-easier-with-support-for-s3-as-a-destination/