Your team is planning to deploy an application that processes periodic tasks using the worker environment on AWS Elastic Beanstalk. Which of the following is an additional requirement for a worker environment in AWS Elastic Beanstalk?

Answer options:

A.Ensure that the application is uploaded as a zip file.
B.Ensure that the application size does not exceed 512 MB.C.Ensure that the application does not include a parent level folder.
D.Ensure that the application contains a file called cron.yaml 

Answer - D
The AWS Documentation mentions the following.
When you use the AWS Elastic Beanstalk console to deploy a new application or an application version, you`ll need to upload a source bundle. Your source bundle must meet the following requirements.
Consist of a single ZIP file or WAR file (you can include multiple WAR files inside your ZIP file).
Not exceed 512 MB.Not include a parent folder or top-level directory (subdirectories are fine).
If you want to deploy a worker application that processes periodic background tasks, your application source bundle must also include a cron.yaml file.
Since this is clearly mentioned in the documentation, all other options are incorrect.
For more information on application source bundles in Elastic beanstalk, please refer to the below URL-
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/applications-sourcebundle.html