The science around the tropical flower had to be double-checked because the
OPTIONS:
- science was unique.
- flower was unique.
flower was unique.

The pet sitting business Eric starts is a failure compared to Kenneth's because
OPTIONS:
- Eric is an incompetent owner.
- Kenneth is an incompetent owner.
Eric is an incompetent owner.

Bob wanted to sell his piano and buy a keyboard, because the
OPTIONS:
- piano was old.
- keyboard was old.
piano was old.