Concept:A ridger is used to mound soil into ridges and heaps, just like the illustrated hand tool.Explanation:The tool shown is a hoe-like implement used for making heaps or ridges.A ridger also forms ridges and mounds of soil.Thus, it can perform a similar function as the illustrated tool.Other options, such as cultivator, harrow, and plough, are mainly used for different tillage operations.Answer:A. ridger