To determine which farm implement performs a similar function to the illustrated tool (which we will assume is a ridger based on the correct option provided), let's analyze each option in detail. Correct Option: C. Ridger Explanation of Why the Ridger is Correct: 1. Function of a Ridger: A ridger is a farm implement designed to create ridges in the soil. This is particularly useful for crops that benefit from raised beds, such as potatoes and sweet potatoes. The ridger helps in soil aeration, drainage, and can also assist in weed control.

1. Design and Operation: A typical ridger consists of two or more blades that are angled to throw soil to the sides, forming ridges. It is usually towed behind a tractor or can be used manually in smaller plots. The ridger's primary function is to shape the soil into raised beds, which is essential for certain agricultural practices.

Why the Other Options are Incorrect: A. Plough - Function: A plough is primarily used for turning over the top layer of soil, which helps in preparing the seedbed for planting. It breaks up the soil and incorporates organic matter into it. - Comparison: While a plough is essential for soil preparation, it does not create ridges. Instead, it flattens and aerates the soil, making it unsuitable for the function of forming ridges. B. Harrow - Function: A harrow is used after ploughing to break up clods of soil, level the surface, and prepare a finer seedbed. It can also help in weed control. - Comparison: Like the plough, a harrow does not create ridges. Its purpose is more about soil refinement rather than shaping it into raised beds. D. Cultivator - Function: A cultivator is used to stir and aerate the soil, as well as to control weeds. It can be used before or after planting to prepare the soil. - Comparison: While cultivators can create some soil structure, they do not specifically form ridges like a ridger does. Their primary role is to mix and aerate the soil rather than shape it into defined ridges. Summary of Key Points:

• Ridger: Specifically designed to create ridges in the soil, ideal for certain crops.
• Plough: Used for turning over soil, not for creating ridges.
• Harrow: Refines soil after ploughing, does not create ridges.
• Cultivator: Aerates and stirs soil, but does not form ridges.

Revision Summary:

• A ridger is the correct tool for creating soil ridges.
• Ploughs and harrows are for soil preparation, not ridge formation.
• Cultivators aerate soil but do not create defined ridges.
• Understanding the specific functions of each tool is crucial for effective agricultural practices.