Salar was a kind and helpful boy ______ nature.
Salar was a kind and helpful boy ______ nature.
Explanation
"Salar was a kind and helpful boy by nature."
Key Tip:
Use "by nature" for inherent characteristics.
Use "in nature" for literal references to the natural world.
Example:
By nature: "She is curious by nature."
In nature: "Lions live in nature."