Probably they read all of their DNA
The correct answer is soil structure. Soil structure refers to the arrangement of soil separates into units which are called soil aggregates which possess solids and pore space. Aggregates are separated by planes of weakness and are dominated by clay particles. Example of an aggregate is silt and fine sand.
The answer should be D.
Hope this helps!
Organelle is a specialized unit within a cell that has a specific function.