For the migration of data from one to another data lake by involving Azure Data Lake Storage Gen2, Azure Blob, and Azure File Storage, you have the option to preserve the file metadata along with data. Which of the following datastore built-in system properties can be preserved by the copy activity during data copy?

Answer options:

A.contentType
B.contentLanguage 
C.contentEncoding
D.contentDisposition
E.cacheControl
F.All the above

Correct Answer: F 
The below-given attributes can be preserved by the Copy activity during Data Copy: 

Option A is incorrect. Not only contentType, all the given datastore built-in system properties are preserved by Copy activity.
Option B is incorrect. Not only contentLanguage, all the given datastore built-in system properties are preserved by Copy activity.
Option C is incorrect. Not only contentEncoding, all the given datastore built-in system properties are preserved by Copy activity.
Option D is incorrect. Not only contentDisposition, all the given datastore built-in system properties are preserved by Copy activity.
Option E is incorrect. Not only cacheControl, all the given datastore built-in system properties are preserved by Copy activity.
Option F is correct. All the given datastore built-in system properties i.e contentLanguage (except for Amazon S3), contentType, contentEncoding,cacheControl and contentDisposition are preserved by Copy activity.
Reference:
To know more about copy activity in ADF, please visit the below given link: 

https://docs.microsoft.com/en-us/azure/data-factory/copy-activity-preserve-metadata