If those are the only answers i would say mutualism
The correct answer is - physically dettering herbivory, protection from frost, and minimizing evaporation.
The plants have developed multiple traits that help them in multiple different circumstances, and some of those traits are the thorns and the hairs on their steams and leaves.
The thorns primarily serve for protection of the plant. They are very sharp and give a painful sting (occasionally poisonous one), so they are a physical protection from the herbivores that would try to eat parts of the plants.
The hairs have multiple functions. They are like a coat that helps the plant to not be affected by frost, help to stop the evaporation, and also partially manage to stop most of the insects that feed on plants.
The paralysis of the body is caused by the presence of lesion due to damage to the structures of the brain. the paralysis occurs on the contralateral side of the damaged structure. This means if the damage occurs in the left hemisphere of the brain, then the right side of the body would be damaged, and if the right hemisphere of the brain is damaged, it causes the paralysis of the left side of the brain.
In this case, the patient's left side is paralyzed, so, the lesion should be present in her right hemisphere.
Hence, the given blank can be filled with right hemisphere.