In hockey, _____________ is awarded if the ball goes over the back line after last being touched by a defender.

Correct option is A

The correct answer is (a) long corner.
 In field hockey, a long corner is awarded if the ball goes over the back line after last being touched by a defender. The long corner is taken from a spot on the sideline that is in line with where the ball crossed the back line but 5 meters from the corner.
Information Booster:
 Long Corner:
o Location: Taken from a spot on the sideline 5 meters from the corner flag.
o Purpose: To restart play when the ball goes out of play over the back line off a defender.
 Offside:
o Rule: A player is in an offside position if they are closer to the opponent's goal than the second last opponent when the ball is played to them, but this rule was abolished in field hockey in the 1990s.
 Free Hit:
o Awarded For: Various infringements or fouls. It is taken from the spot where the infringement occurred.
 Penalty Corner:
o Awarded For: Specific fouls committed by defenders inside the shooting circle. The attacking team takes the penalty corner from a spot on the back line, 10 meters from the goal post.