Because Brett was being helped with moving by Donald, 
OPTIONS:
- Brett was feeling very generous when the help was offered.
- Donald was feeling very generous when the help was offered.
Donald was feeling very generous when the help was offered.

Katrina told Angela that she was excited for the first class of her cooking club.  
OPTIONS:
- Katrina was motivated.
- Angela was motivated.
Katrina was motivated.

Matthew founded a new business while Derrick stayed at home and watched TV all day because 
OPTIONS:
- Matthew was lazy.
- Derrick was lazy.
Derrick was lazy.