Final answer:
Rabindranath Tagore did not participate in a hunger strike; instead, he expressed concerns about India's political issues through his literary and philosophical work. He did not engage in direct political actions such as the hunger strikes used by leaders like Gandhi.
Step-by-step explanation:
Regarding the question, What did Rabindranath Tagore do during the hunger strike? there seems to be a misconception. Tagore was a renowned poet, playwright, and philosopher, but there is no direct historical evidence that he participated in a hunger strike. Rabindranath Tagore was an advocate for India's independence and expressed his concerns about the path of nationalism in India, but there are no records of him partaking in hunger strikes like those of Gandhi. Tagore's approach to political issues was generally more philosophical and nuanced, and he did not engage in direct political actions such as hunger strikes that were characteristic of other leaders like Mahatma Gandhi, who famously used fasting as a form of protest.
Therefore, of the given options, it seems most likely that he expressed his concerns about the situation but did not directly participate in the hunger strikes (Option 3). It is important to note that Tagore's primary contributions to Indian nationalism were through his literary and philosophical works rather than direct action.