When preparing to transplant a plant, one should:

When preparing to transplant a plant, minimizing exposure of the roots to air is crucial for their health and survival. Roots are sensitive to air exposure, which can lead to dehydration and stress for the plant. Keeping the roots covered with soil or moisture during the transplanting process helps protect them from air exposure and retains essential moisture.

In stark contrast, exposing the roots to air can cause them to dry out quickly, leading to transplant shock and potentially harming the plant's ability to establish itself in the new environment. Therefore, ensuring that the roots are shielded from air during the transplanting procedure is vital for promoting successful growth after relocation.