B. Through a relatively short distance .
C. Back and forth between the ends of the conductor
D. From one end of the conductor to the other end
B=User targets
C=User requirements
Answer:
C
Explanation:
User requirements are the needs of the users, even though some people get confused and think that user requirements are not needs, but in fact prerequisites. However, this is incorrect for the workplace states that needs are required to be fulfilled.
Answer:
heart pace maker
Explanation: