Change into indirect narration They said, "What a fine day it is!"

Explanation

The correct option is: They exclaimed with joy what a fine day it was. This sentence maintains the exclamatory form and appropriately changes the verb tense from present ('is') to past ('was') as required in indirect speech. It also preserves the emotional tone by using 'exclaimed with joy.'Other options fail due to grammatical errors or incorrect tense usage:-Option A omits the article 'a.'-Option B loses the exclamatory nature of the original sentence.-Option C does not change the verb tense from present to past.