In "Question Libraries" in the Admin Center we cannot add more than 10 answers to a multiple choice question.
SAP SuccessFactors Recruiting Management
This is expected behavior of Question Libraries in the Admin center, you cannot add more than 10 answers. It is possible to add more than 10 answers to the question in the question field on the job requisition details page. If you would like to be able to add more than 10 answers in "Question Libraries" in the Admin Center, please create an enhancement request.
2090228 - How to submit enhancement requests for SAP SuccessFactors products
KBA , LOD-SF-RCM-JOB , Job Postings & Requisitions , Problem