You are creating a web application and want to make the text content accessible to people with learning differences. 
Which cognitive service will you use?

Answer options:

A.Immersive Reader
B.Personalizer
C.Speech service
D.Language Understanding

Correct Answer: A
Option A is CORRECT. Immersive reader is a Microsoft offering that improves reading comprehension for the people with learning differences by implementing proven techniques.
Option B is INCORRECT. Personalizer is an API service that enables developers to improve the engagement with users and enhance the user experience by letting developers create rich, personalized content.
Option C is INCORRECT. Speech service is an Azure offering that provides speech to text, text to speech and speech translation.
Option D is INCORRECT. Language Understanding is an AI service that uses natural language to facilitate user interaction with applications/bots/IoT devices.
References: 

https://docs.microsoft.com/en-us/azure/cognitive-services/immersive-reader/
https://docs.microsoft.com/en-us/azure/cognitive-services/personalizer/what-is-personalizer
https://docs.microsoft.com/en-us/azure/cognitive-services/speech-service/overview
https://azure.microsoft.com/en-in/services/cognitive-services/language-understanding-intelligent-service/