Amazon QuickSight is the most appropriate service in the scenario. It is a fully-managed service that allows for insightful business intelligence reporting with creative data delivery methods, including graphical and interactive dashboards. QuickSight includes machine learning that allows users to discover inconspicuous trends and patterns on their datasets.
AWS Quick sight
AWS Quick Sight tool | Source: aws.amazon.com/quicksight
Option B is INCORRECT. Amazon Redshift service is a data warehouse and will not meet the requirements of interactive dashboards and dynamic means of delivering reports.
Option C is INCORRECT. Amazon CloudWatch dashboards will not accomplish the requirements of the scenario. They are used to monitor AWS system resources and infrastructure services, though they are customizable and present information graphically.
Option D is INCORRECT. Amazon Athena is a query service that allows for easy data analysis in Amazon S3 by using standard SQL. The service does not meet the requirements of the scenario.