________ space agency’s Astronauts Bob Behnken and Doug Hurley returned safely from ISS after successful Demo-2 mission ?

(a) Roscosmos
(b) NASA
(c) JAXA
(d) None of these

Two US astronauts, Bob Behnken and Doug Hurley, returned from the International Space Station (ISS) on 2 August 2020.  The Crew Dragon was designed and operated by Space-X. It is being used for this flight test can stay in orbit about 110 days.