A start-up working on building an app to design memes, wants to 
1- Text content scanning from images. 
2- extract text from images. 
Which API should be used?

Answer options:

A.Text Moderation API
B.Content Moderator Review tool
C.Custom term API
D.Image Moderation API

Correct Answer: D
Option A is INCORRECT because Text Moderation API cannot scan images for text.
Option B is INCORRECT. Content Moderator Review tool provides services that combines human review with the machine learning content moderation. This is not an API.
Option C is INCORRECT. Custom term API helps the creation of custom term lists to be used with Text Moderation API.
Option D is CORRECT. Image Moderation API can perform both the listed activities.
References: 

https://docs.microsoft.com/en-us/azure/cognitive-services/content-moderator/text-moderation-api
https://docs.microsoft.com/en-us/azure/cognitive-services/content-moderator/review-tool-user-guide/human-in-the-loop
https://docs.microsoft.com/en-us/azure/cognitive-services/content-moderator/try-terms-list-api
https://docs.microsoft.com/en-us/azure/cognitive-services/content-moderator/image-moderation-api