Which NIMS structure develops, recommends, and executes public information plans and strategies?

The NIMS structure that develops, recommends, and executes public information plans and strategies is the Joint Information System (JIS).

JIS integrates incident information and public affairs into a cohesive organization designed to provide consistent, coordinated, accurate, accessible, timely and complete information to the public and stakeholders during incident operations.

Source: https://training.fema.gov/emiweb/is/is700b/handouts/national_incident_management%20system_third%20edition_october_2017.pdf