The answer would be C, as the paragraph talks about how donuts solved the soggy cake problem.
Answer:
With the help of eccentric trainer but supreme horseman Lucien Laurin, this is the story of a Virginia horse taking racing by storm and making himself a household name while winning the first Triple Crown in 25 years in World Record time.
An example of a typo would be spelling a word incorrectly. Let's say I were to spell whgat. The correct spelling would be What.