Which vitamin is produced when a person is exposed to sunlight?

Vitamin D

Which actor provided the voice for the dragon Mushu in Disney's "Mulan"? Which animal uses a unique nose-like appendage for navigation and prey detection underwater? Which rock group features members Mick Fleetwood and Stevie Nicks? At which battle did Henry V of England famously defeat French forces in 1415? Which African country was never colonized by a European power?