Fill in the blank (_) in the following sentence from the following choices.
Sentence: They spent their money on the whistle, instead of the stop watch. The track coach needed a _ .

Choice 1: They spent their money on the whistle, instead of the stop watch. The track coach needed a whistle .
Choice 2: They spent their money on the whistle, instead of the stop watch. The track coach needed a stop watch .
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2. The track coach needed a stop watch.