
Explanation:

Box 1: Continuous
Continuous runs on all instances that the web app runs on. You can optionally restrict the WebJob to a single instance.
Box 2: Triggered
Triggered runs on a single instance that Azure selects for load balancing.
Box 3: Continuous
Continuous supports remote debugging.
Note:
The following table describes the differences between continuous and triggered WebJobs.

References:
https://docs.microsoft.com/en-us/azure/app-service/web-sites-create-web-jobs