Fill in the blank (_) in the following sentence from the following choices.
Sentence: We traced our steps and found extra footsteps in the mud instead of streaks as the _ were lighter.

Choice 1: We traced our steps and found extra footsteps in the mud instead of streaks as the footsteps were lighter.
Choice 2: We traced our steps and found extra footsteps in the mud instead of streaks as the streak were lighter.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
1.