Answer:
a) With a robotic arm
Step-by-step explanation:
On May 22, 2012, SpaceX launched their maiden flight to the ISS with a Dragon cargo capsule aboard the Falcon 9 rocket.
According to NASA's official website, NASA.gov, "the capsule [was] allowed to move close enough to the station for astronauts to grab it with the robot arm and connect it to the Earth-facing port of the Harmony module."
Source:
Dunbar, Brian. “SpaceX Launches Falcon 9/Dragon on Historic Mission.” NASA.gov