Knowledge Center WordPress Plugin can be used to display questions and answers, all supposed to be commonly asked in some context, and pertaining to a particular topic.
Plugin Page:
https://wordpress.org/plugins/knowledge-center/
Knowledge Center Pro WordPress Plugin - Pro solution for any organization to manage FAQs supporting many advanced features.
https://emdplugins.com/plugins/knowledge-center-professional/
Knowledge Center Enterprise - Enterprise level knowledge base solution and must have any publisher.
https://emdplugins.com/plugins/knowledge-center-enterprise/