Which of the following would fall under the responsibilities of an SRE?

Developing new application features is typically the role of a software developer or development team, not primarily an SRE.

Creating a monitoring baseline for an application is a core responsibility of an SRE, as it involves defining acceptable performance metrics, thresholds, and alerts to ensure the reliability and availability of the system. SREs use monitoring to identify potential issues, track service level objectives (SLOs), and inform operational decisions.

Submitting a budget for running an application in the cloud is usually a responsibility of a finance department, project manager, or cloud architect, not typically an SRE.

Writing policy on how to submit a code change usually falls under the responsibilities of development team leads, engineering management, or security/compliance teams.