sentence: Jerry always wore a safety harness when he was on a roof but not on the driveway since the  OPTIONS:
- roof is steep.
- driveway is steep.
complete: roof is steep.

sentence: Derrick always lost the key to his car when at home unlike Hunter, due to  OPTIONS:
- Derrick being unforgetful.
- Hunter being unforgetful.
complete: Hunter being unforgetful.

sentence: James found that the tank was surprisingly easy to operate and not the vehicle because the  OPTIONS:
- tank had simple controls.
- vehicle had simple controls.
complete:
tank had simple controls.