Comprehensive and Detailed In-Depth Explanation:

Hotspots in the SAP EWM warehouse management monitor (/SCWM/MON) are interactive links on objects (e.g., warehouse tasks, bins). Option A ("Call the corresponding user interface on the selected object") is correct because clicking a hotspot navigates to the detailed UI for that object (e.g., warehouse task details). Options B, C, and D are incorrect: methods are executed via actions, not hotspots (B); view changes are manual (C); and measurement services are configured separately (D).