I would say something that makes you use the spinal cord the most (if you catch my drift)...
Answer:
If your parent won't take their meds, don't get into an emotional struggle. Talk with them to understand the issue and consider a mental evaluation.
Explanation:
Answer: The answer is Adaption-level Phenomenon
Explanation: Adaption-level phenomenon is a tendency which people have to adapt fast to a new situation until the situation becomes the norm. They get used to such situation such that it is no longer big deal to them anymore and another new experience is needed. If a new situation seems better than the current state the person feels better but only for a little while, if the situation however feels like a step backward, the person becomes sad and frustrated.
The answer is C) Because nothing in this world is limited, especially not your nowledge base.