I am practicing and i got stuck on this situation

I have the following API: https://jsonplaceholder.typicode.com/

And this API has the following endPoints:

posts 100 posts
comments 500 comments
albums 100 albums
photos 5000 photos
all 200 all
users 10 users

Consider this API and its resources.

I want to select 3 of these resources and design the functional test cases that fit properly and then automate at least 6 different test cases in Postman

I'm kinda stuck on this

Can help me?