@Cem Thanks for reaching out. You can leverage the SharePoint connector for your requirement. There is no out of box feature that when user select a specific choice then it should create the item in different list. But the item will be first created on your list a then when the logic app triggers your workflow will check the specific choice based on which you want to create the item in list b and then delete the list a item for the same record.
Logic App workflow:
When an item is created (list a in site a configuration) --> Condition (to validate based on choose you can use the fields from your trigger) --> Create item (if true/false base on your condition create a new item in list b in site b that you have configured in connector) --> Delete item (remove the item based id of the trigger condition for list a site a that you configure in connector)
Feel free to get back to me if you need assistance.
Please "Accept Answer" if the answer is helpful so that it can help others in the community.