What is a unique requirement of a Streaming Insight query?

What is a unique requirement of a Streaming Insight query?
A . A dimension
B. A measurement
C. A window function
D. A WHERE clause

Answer: C

Explanation:

A window function is a unique requirement of a Streaming Insight query. It defines the time interval for the query to run on the streaming data and the frequency of the query execution.

Reference: https://help.salesforce.com/s/articleView?id=sf.c360_a_streaming_insights.htm&type=5