Eric but not Samuel was able to direct traffic because
OPTIONS:
- Eric used to be a crossing guard.
- Samuel used to be a crossing guard.
Eric used to be a crossing guard.

Grad school was a chore for Christine but fun for Megan, since
OPTIONS:
- Christine hated studying and taking tests.
- Megan hated studying and taking tests.
Christine hated studying and taking tests.

Laura gently rubbed and stroked Christine's skin with her fingertips because
OPTIONS:
- Laura liked to show affection.
- Christine liked to show affection.
Laura liked to show affection.