You create a real-time Dataverse classic workflow. 
What type of condition can you use in your workflow?

Answer options:

A.If-else
B.Check
C.True-False
D.Team
E.Wait

Correct Answer: B 
The workflows help users to perform repeatable tasks. 
Dataverse has two types of classic workflows: Real-time and Background. 
Both workflows are automated business processes that run without a user interface and user interaction. A workflow consists of stages and steps. Each step can have conditions and actions (Number 2). 
There are two types of conditions for the processes that you can use in classic workflows: Check conditions — implementation of if-then-else logic
Wait conditions — pause a process till a condition is met
The real-time workflow is a synchronous classic workflow. The user needs to wait till it finishes. 
When you create a new classic real-time workflow, you need to be sure that the box "Run this workflow in the background (recommended)" is unchecked (Number 1). If it is checked, you will create a Background workflow. 
You cannot use the Wait condition with real-time workflow, only the Check condition (Number 3). 

The Check condition is an implementation of if-then-else logic in a workflow process (Number 4). 

All other options are incorrect. 
For more information about Dataverse classic workflows, please visit the below URLs: 

https://docs.microsoft.com/en-us/power-automate/workflow-processes
https://docs.microsoft.com/en-us/powerapps/maker/data-platform/configure-workflow-steps
https://docs.microsoft.com/en-us/powerapps/maker/data-platform/best-practices-workflow-processes