The correct answer is option 2, Lokmanya Bal Gangadhar Tilak. He is popularly associated with the slogan "Swaraj is my birthright and I shall have it." Lokmanya Bal Gangadhar Tilak was a prominent Indian nationalist leader during the Indian independence movement. He was one of the key members of the Indian National Congress.

The slogan "Swaraj is my birthright and I shall have it" became a rallying cry for the freedom fighters during the struggle for independence. Tilak believed that every Indian had the inherent right to self-rule and fought tirelessly to achieve it. He advocated for swaraj, meaning self-governance or independence for India.

While the other options listed may have also played significant roles in the freedom struggle, they are not specifically associated with this particular slogan. Sri Aurobindo Ghosh, Bipin Chandra Pal, and Lala Lajpat Rai were all prominent leaders and contributors to the Indian independence movement, but they were not directly linked to this slogan.