Who is the record holder for single longest space flight by ‘NASA’ astronaut abroad the International Space Station ?

The current record holder for the single longest spaceflight by a NASA astronaut is Frank Rubio. He spent 371 days aboard the International Space Station (ISS), returning to Earth on September 27, 2023. He surpassed the previous record of 355 days held by Mark Vande Hei (Option B), who completed his mission in March 2022. Pyotr Dubrov and Anton Shkaplerov (misspelled as Sheaplerov in the options) are Russian cosmonauts from Roscosmos, not NASA astronauts. Since Frank Rubio is the actual record holder and is not listed in the options, the correct answer is None of the above.