Which of the following can be used to create a new alert rule in the Azure Portal?

The first option, Monitor > Alerts > +Create > Alert rule, correctly outlines the steps to create a new alert rule in the Azure Portal. In this navigation path, users access the Monitor section, which is specifically designed for overseeing the performance and health of resources in Azure. By selecting Alerts, users are then given the option to create a new alert rule, providing a seamless and structured approach to setting up monitoring alerts.

This process ensures that users can effectively target specific resources or conditions for which they want to be notified. The intuitive interface and clear labeling are designed to facilitate quick and accurate configuration of alert rules, essential for effective resource management within Azure.

The other options do not accurately represent the necessary navigation or workflows available in the Azure Portal for creating alert rules.