Passage: "Toxic" is a song recorded by American singer Britney Spears for her fourth studio album In the Zone (2003). It was written and produced by Pontus Winnberg (known collectively as Bloodshy & Avant), with additional writing from Cathy Dennis and Henrik Jonback. The song was released on January 13, 2004, by Jive Records, as the second single from In the Zone. The song was originally offered to Kylie Minogue for her ninth studio album Body Language (2003), but she rejected it. After trying to choose between "(I Got That) Boom Boom" and "Outrageous" to be the second single from In the Zone, Spears selected "Toxic" instead. A dance song with elements of bhangra music, "Toxic" features varied instrumentation, such as drums, synthesizers and surf guitar. It is accompanied by high-pitched Bollywood strings, sampled from Lata Mangeshkar and S. P. Balasubrahmanyam's "Tere Mere Beech Mein" (1981), and breathy vocals. Its lyrics draw an extended metaphor of a lover as a dangerous yet addictive drug.

Question: What number album was Toxic produced on?
fourth studio album