Step 1: Concept In a Mouldboard (MB) plough, the soil exerts a horizontal pressure (side thrust) as the furrow slice is cut and turned.
Step 2: Meaning To keep the plough moving in a straight line and prevent it from shifting sideways, a flat plate is used to press against the furrow wall.
Step 3: Analysis The landside is the metallic plate that stays in contact with the unploughed land, absorbing the lateral pressure exerted by the soil on the mouldboard.
Step 4: Conclusion Thus, the landside is the component responsible for taking the side thrust.
Final Answer: (A)