In the following text, what type of connector best fits in the blank to logically connect the ideas?

Currently, motion sickness is assessed through both subjective and objective measurements. In subjective measurements, the person is asked to complete relevant questionnaires, (      ) the Motion Sickness Questionnaire (MSQ), the Misery Scale (MISC), and the Simulator Sickness Questionnaire (SSQ), which help generate ratings for motion sickness.