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

1. A

   Anton Sheaplerov

   Anton Sheaplerov is a Russian cosmonaut who spent considerable time in space but does not hold the specific NASA single-flight duration record on the ISS. Therefore, this option is incorrect.

2. B

   Pyotr Dubrov

   Pyotr Dubrov is also a Russian cosmonaut who flew alongside Mark Vande Hei on the record-breaking long-duration mission, but he represents Roscosmos rather than NASA. Thus, this choice is not correct.

3. C

   Mark Vande Hei

   Mark Vande Hei holds the record for the single longest space flight by a NASA astronaut aboard the International Space Station, spanning 355 days in orbit. This duration surpassed the previous NASA record held by Scott Kelly, making this option the officially correct choice.

4. D

   None of the above

   None of the above incorrectly claims that none of the listed individuals hold the record, ignoring the correct NASA astronaut. Hence, this option is wrong.

Summary. Official key is (c) Mark Vande Hei. This question tests knowledge of record-breaking spaceflight durations achieved by NASA astronauts aboard the International Space Station. While Russian cosmonauts like Pyotr Dubrov shared the extended mission duration, the specific NASA single-flight record belongs to Mark Vande Hei at 355 days. Candidates must carefully distinguish between space agencies and individual mission records when evaluating international crew members. Therefore, option (c) is the correct choice.