(c) Instance Segmentation
Instance Segmentation detects multiple objects, assigns each a category, and labels every pixel — making it suitable for handling multiple objects simultaneously.
Source: Computer Vision Tasks, Chapter 5
The passage states Classification + Localisation is used only for single objects, while Instance Segmentation handles detecting instances (multiple objects) and labels each pixel. Object Detection also handles multiple objects, but it is not among the options; Instance Segmentation is the best answer from the given choices.