Explanation
D: All of the above
Clay has the ability to hold water, provide a habitat for organisms, and offer anchorage and support for plant roots. Due to its fine particle size and high water-holding capacity, clay soils retain water well, making them suitable for plant growth. The small spaces between clay particles can also provide a habitat for various microorganisms and insects. Additionally, the compact nature of clay particles allows them to provide a stable substrate for plant roots to anchor and grow in. Therefore, clay has the maximum capacity to hold water, organisms, and roots.