To answer this question, we need to understand the Indian President who participated in the Irish Freedom Struggle and served a jail term for it.
Option A) Dr. S. Radhakrishnan - This option is incorrect because Dr. S. Radhakrishnan did not participate in the Irish Freedom Struggle or serve a jail term for it.
Option B) V.V. Giri - This option is correct. V.V. Giri, the fourth President of India, actively participated in the Irish Freedom Struggle and served a jail term for it. He was involved in the anti-British activities and supported the cause of Irish independence.
Option C) Neelam Sanjiva Reddy - This option is incorrect because Neelam Sanjiva Reddy did not participate in the Irish Freedom Struggle or serve a jail term for it.
Option D) Gulzarilal Nanda - This option is incorrect because Gulzarilal Nanda did not participate in the Irish Freedom Struggle or serve a jail term for it.
The correct answer is B) V.V. Giri. This option is correct because V.V. Giri actively participated in the Irish Freedom Struggle and served a jail term for it.