Robert led the hiking expedition into the wilderness instead of Nelson because
OPTIONS:
- Robert was an experienced guide.
- Nelson was an experienced guide.
Robert was an experienced guide.

The earthquake destroyed the house of Samuel, but not Jeffrey's, so
OPTIONS:
- Samuel is now very grateful.
- Jeffrey is now very grateful.
Jeffrey is now very grateful.

So
OPTIONS:
- Brian was hurt because Brian has a huge wound on their arm and Hunter didn't.
- Hunter was hurt because Brian has a huge wound on their arm and Hunter didn't.
Brian was hurt because Brian has a huge wound on their arm and Hunter didn't.