Which pneumatic coaster operated at Kings Dominion from 2001 to 2007?

The correct response is Hypersonic XLC, which was a notable pneumatic coaster that operated at Kings Dominion during the specified years, from 2001 to 2007. This coaster was significant as it utilized pneumatic technology, which employs compressed air to launch trains to high speeds, allowing for a rapid ascent and thrilling drops that characterize its unique ride experience.

The context of other choices further illustrates the distinct identity of Hypersonic XLC. Intimidator 305, for instance, is a different type of coaster that opened in 2010, well beyond the operational period of Hypersonic XLC. Millennium Force, on the other hand, is located at Cedar Point and is known for its traditional lift hill and not pneumatic launch systems, making it irrelevant to the question. Finally, Fury 325, which opened in 2015 at Carowinds, is also unrelated, as it employs a different design and technology altogether.

Hypersonic XLC's innovative design and operation period make it a standout choice when discussing roller coasters specifically at Kings Dominion during the early 2000s.