Which of the following soil textures is most prone to waterlogging?  

Clay soil is most prone to waterlogging among the given options. This is because clay soil has a high water-holding capacity, which means it can hold onto water for longer periods of time. 

However, if the soil becomes saturated with water, it can lead to poor drainage and oxygen deficiency in the soil. This can create conditions that are unfavourable for many plants, as roots need oxygen to grow and thrive. 

Sandy soil, on the other hand, has larger spaces between particles, which allows for faster drainage and less waterlogging. 

Loam soil is a mixture of sand, silt, and clay and has a balanced water-holding capacity and drainage. 

Silt soil has smaller particles than sand but is larger than clay and has moderate water-holding capacity and drainage.