Transport of organic solutes from the source of assimilation to the source of sink is:

Explanation

The correct answer is translocation. This process specifically refers to the movement of organic solutes such as sugars and amino acids through the phloem from the source, where they are synthesized, to the sink, where they are consumed or stored. The movement is driven by a pressure gradient created by the differential concentration of solutes between the source and the sink.Option A, 'Transportation,' is too general as it does not specifically describe the biological process in plants. Option B, 'Transduction,' refers to signaling and not solute movement. Option D, 'Transformation,' relates to genetic material transfer in bacteria and is unrelated to the movement of solutes in plants.