Fill in the blank (_) in the following sentence from the following choices.
Sentence: Samuel watched a video about how to make cream spinach but Brian preferred to read an article because _ learned better by reading.

Choice 1: Samuel watched a video about how to make cream spinach but Brian preferred to read an article because Samuel learned better by reading.
Choice 2: Samuel watched a video about how to make cream spinach but Brian preferred to read an article because Brian learned better by reading.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.