The correct answer for the question that is being presented above is this one: "Sushashini Pratap's decision to marry Subha." The event that represents a moral dilemma faced by a character in the short story “Subha” by Rabindranath Tagore is that Sushashini Pratap's decision to marry Subha.
Your answer is A. Present perfect
All would seem appropriate, but I'd say D, since it assists you in gathering data to support your clause