Fill in the blank (_) in the following sentence from the following choices.
Sentence: Elena couldn't figure out why her swamp hibiscus weren't thriving, so she hired a gardener Laura to help. _ discovered she accidentally planted them in dry soil.

Choice 1: Elena couldn't figure out why her swamp hibiscus weren't thriving, so she hired a gardener Laura to help. Elena discovered she accidentally planted them in dry soil.
Choice 2: Elena couldn't figure out why her swamp hibiscus weren't thriving, so she hired a gardener Laura to help. Laura discovered she accidentally planted them in dry soil.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.