SeeTheWorld is a travel company. The company wants to add a travel journal functionality to its Power Platform solution. Customers should create journal entries and be able to attach multiple files to the events. SeeTheWorld invites you as a Solution Architect to design the new data structures. All data should be stored in the Dataverse database. 
What type of table will you use for the journal events and attachments?

Answer options:

A.One activity table with enable attachments option
B.One virtual table with enabled attachments option
C.One custom table with an additional Attachment column
D.One activity table with an additional Attachment column
E.One custom table with enabled attachments option
F.One virtual table with an additional Attachment column

Correct Answer: A 
Dataverse provides the three types of tables (entities): Standard — this is a usual custom table type user can create. These tables store data and navigation for model-driven apps.
Activity — this is a special custom table type for storing activity information like appointments, phone calls, emails, tasks, etc.
Virtual — this custom table type has columns that bring data from external sources, like Azure SQL Database or Azure Cosmos DB.To store activity information, like a journal, you need to use an activity table type (Number 1). This type creates columns that help you store the journal data, such as start and end time, date. Also, Dataverse provides columns to capture the activity purpose, like subject and description. 
When you create a table, there is a check box for the Enable attachments option (Number 2). If you check the box, the app will store multiple files or notes for each journal record. 

Options B and F are incorrect because a virtual table brings data from an external source that is not applicable in this case.
Options C and E are incorrect because you need to use an activity table type instead of a standard custom table.
Option D is incorrect because if you add the Attachment column, you can attach only one file to the journal record instead of several.
For more information about the Dataverse table types, please visit the below URLs: 

https://docs.microsoft.com/en-us/learn/modules/data-modeling/5-dataverse
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/activity-entities