The correct answer is letter A. Dimmsdale is where Timmy lives in The Fairly OddParents. Dimmsdale is a fictional city in the Fairly OddParents series and is in California. According to the history of the series, as mentioned either by one of the characters in specific episodes, Dimmsdale was founded in 1665. The place was supposed to be named Bitterburg in honor of Alden Bitterroot.
However, the townspeople soon found out that Alden was evil and a witch. It was Dale Dimm, the village idiot, who stopped him and saved the town from Alden’s monstrosity. The town was then named Daleburg, but it was revealed that Timmy, who traveled from the present to the past, suggested the town to be called Dimmsdale and the rest was history.