Fill in the blank (_) in the following sentence from the following choices.
Sentence: The dentist cleaned the tongue with a scraper instead of a towel, even though the _ was ineffective.

Choice 1: The dentist cleaned the tongue with a scraper instead of a towel, even though the scraper was ineffective.
Choice 2: The dentist cleaned the tongue with a scraper instead of a towel, even though the towel was ineffective.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2. The sentence should read "even though the towel was ineffective." The dentist used a scraper instead of a towel, so the