Step 1: Context of the slogan.
The slogan “Jai Hind” (Victory to India) became one of the most powerful patriotic calls during India’s freedom struggle. It symbolized unity and national pride.
Step 2: Origin.
Although “Jai Hind” was first coined by Abid Hasan Safrani, a close associate of Subhash Chandra Bose in the Indian National Army (INA), it was Bose who popularized it as a national slogan.
Step 3: Role of Bose.
Subhash Chandra Bose, as the leader of the INA, used “Jai Hind” as the official greeting of the army. From there, it spread widely and became a rallying cry for Indian independence.
Step 4: Conclusion.
Thus, the slogan “Jai Hind” is attributed to Subhash Chandra Bose.
\[
\boxed{\text{Correct Answer: Subhash Chandra Bose}}
\]