Story needs to be completed:
The medication made Justin sleepy but not Nelson because

My choice:
Justin was susceptible to that side effect.

Story needs to be completed:
Amy wore only synthetic fabrics whereas Kayla leaned towards natural ones because

My choice:
Kayla preferred being conscientious.

Story needs to be completed:
Christine is a faster driver than Rachel because

My choice:
Christine is always in a hurry to get everywhere.

Story needs to be completed:
Justin went to see William who was a therapist, and

My choice:
Justin told them all about their problems.