You are a SOC Analyst working at a company that is deploying Azure Sentinel. You are responsible for performing log data analysis to search for malicious activity, display visualizations, and perform threat hunting. 
To query log data, you use the Kusto Query Language (KQL). Often fields in a table store structured and unstructured string data. You write KQL statements to extract and manipulate data stored in these fields. 
Which of the following items contains a Dynamic field?

Answer options:

A.External data.
B.Calculated data.
C.Key-value pair data.
D.Internal data

Correct Answer: C Option C is correct. The properties in the field are accessed with the dot notation.
Option A, B and D are incorrect. The data in the field is a string of key-value pairs.
Reference: 

https://docs.microsoft.com/en-us/azure/data-explorer/kusto/query/scalar-data-types/dynamic