sentence: Megan's memory is a lot sharper than Rebecca's is due to  OPTIONS:
- Megan being a lot older.
- Rebecca being a lot older.
complete: Rebecca being a lot older.

sentence: Tanya wasn't stuck in traffic but Maria was because  OPTIONS:
- Tanya didn't check road conditions before leaving home.
- Maria didn't check road conditions before leaving home.
complete: Maria didn't check road conditions before leaving home.

sentence: If you wonder whether to use a pen or a pencil to do your homework, the  OPTIONS:
- pen is harder to fix later.
- pencil is harder to fix later.
complete:
pen is harder to fix later.