Fill in the blank (_) in the following sentence from the following choices.
Sentence: Robert asked Steven to add more seasoning in the soup, because _ did not add salt.

Choice 1: Robert asked Steven to add more seasoning in the soup, because Robert did not add salt.
Choice 2: Robert asked Steven to add more seasoning in the soup, because Steven did not add salt.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.