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

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

According to the official FEMA IS-700.B course material, the Joint Information System 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