This question deals with converting an exclamatory sentence from direct to indirect speech. When transforming "She said, 'Hurrah! We won the match.'" into indirect speech, special attention must be paid to the reporting verb and the expression of emotion.
For exclamatory sentences, the reporting verb "said" is replaced by a verb that conveys the emotion or exclamation, such as "exclaimed," "shouted," "cried," or "wondered." Since "Hurrah!" expresses joy, "exclaimed with joy" is the most suitable choice. Other phrases like "exclaimed happily" or "rejoiced" could also be used.
Next, the tense of the verb in the reported clause must be backshifted. The simple past tense "won" (from "We won") changes to the past perfect tense "had won" in indirect speech. This is a standard rule for past tense verbs when the reporting verb is in the past.
Finally, the pronoun "We" changes to "they" to reflect the perspective of the reporter, and the conjunction "that" is used to introduce the reported statement. Therefore, "She exclaimed with joy that they had won the match" correctly incorporates all these necessary changes, accurately conveying the original meaning and emotion.