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Venu Gopala Krishna Kukkapalli 
Sorry for this issue you are encountering.
May I suggest you please double check if you have done the same?
Navigate to Setup -> Groups and create a new Group just like the one on the picture.
Add group members.
Create a Poll to ask the question and a Post with @Ada Balewa.
That’s it! Now, you are really close. Just check the challenge.
Hope this helps.
Kindly mark this as solved if the information was helpful.
Thanks,
Nagendra
All Answers
Sorry for this issue you are encountering.
May I suggest you please double check if you have done the same?
Navigate to Setup -> Groups and create a new Group just like the one on the picture.
Add group members.
Create a Poll to ask the question and a Post with @Ada Balewa.
That’s it! Now, you are really close. Just check the challenge.
Hope this helps.
Kindly mark this as solved if the information was helpful.
Thanks,
Nagendra