What does nocking an arrow involve?

Nocking an arrow involves securely placing the arrow onto the bow string at the correct position so that it is held in place when drawing and releasing. This process ensures that the arrow is correctly aligned with the bowstring and ready to be shot. Typically, nocking is done by positioning the nock (the small slot at the end of the arrow) onto the bowstring until it clicks or feels firmly seated.

The other options do not accurately describe nocking. Pulling the bow string back halfway refers to drawing the bow and is a continuation of the shooting process, not part of nocking itself. Adjusting the sight on the bow is related to aiming and ensuring accuracy, which happens after nocking the arrow. Ensuring the arrow is straight is important for flight but is not a part of the nocking process; it pertains more to inspecting the arrow's condition before shooting.