Answer:
Evidence showed that the island had been hit by a horrible tsunami.
Step-by-step explanation:
A lot of these sentences can be identified by reading them out loud. sentences 2, 3, and 4 are in need of some well place commas.
Edited sentences:
The baker made gingerbread cookies, and a gingerbread boy jumped off the cookie sheet and no one could catch it.
or
The baker made gingerbread cookies. A gingerbread boy jumped off the cookie sheet. No one could catch it.
We can add commas or replace the conjunction and for periods.