Your company installs solar power panels which are integrated with IoT devices. These devices collect instantaneous data like temperature, precipitation, etc and send them to the Azure IoT hub. You need to set up a solution that will help transmit the data to Power BI for real-time visualization. Which of the following services should be used here?

Answer options:

A.Azure Stream Analytics
B.Azure Batch
C.Azure Event Grid
D.Azure Data Lake Storage Gen2

Correct Answer: A 
Real-time data from Sensors can be sent to the Azure IoT hub, which can be used by Power BI for data visualization. This integration happens when you set up an Azure stream analytics job that has a source as Azure IOT hub and sends the data to Power BI. Please refer to the image below. 

Option A is correct: Azure Stream Analytics is a fully managed real-time data analytics service and has a direct integration option with Azure IOT hub and Power BI.
Option B is incorrect: Azure Batch is for large-scale batch processing.
Option C is incorrect: Azure Event grid is usually used when you have to build an application with event-based architecture, and it is not a suitable solution here.
Option D is incorrect: It is a storage option.
Reference: 
To know more, please refer to the docs below: 

https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-live-data-visualization-in-power-bi
https://azure.microsoft.com/services/stream-analytics/#overview
https://docs.microsoft.com/en-us/azure/iot-hub/media/iot-hub-live-data-visualization-in-power-bi/end-to-end-diagram.png