Answer:
D. A trait passed on from parent to offspring
Inherited is where you gain characteristics from the parent like history of pain (diabetes, arthritis, etc.) or like personal traits (nose shape, eye color, etc.).
It can't be coming from siblings because that is absurd.
You can't inherit those personal traits by watching the parents (again, absurd)
The same thing goes to teaching a trait. This is a different type of inheriting characteristic, more like learning skills.