The given clause, "whoever wins the contest a savings bond" is a subordinate or a dependent clause. This kind of clause does not convey a complete thought and needs the main sentence in order to make it understandable. This subordinate clause is connected to the main clause with the subordinating conjunction "whoever".
Answer:
D) Because she'd just eaten a bowl of corn flakes, Ms. Frazzle, while swimming in the pool, got a sudden side cramp and had to be rescued by the lifeguard.
At first I thought it was putting a comma between Please & mom or switching those two words....
It's pretty good!!! Nice job!!!