Training needed to fulfill the job GCU

Yes.

Explanation:

Yes, training needed to fulfill the job GCU because it is a very responsible job which can only perform by the experience and trained persons. The Generator Control Unit (GCU) is an important part of the aeroplane electrical power generating system which also supervises and controls AC generating channel. For better working of this generator Control Unit (GCU), experienced and trained operators are required in order to solve the problem if occur during the flight.

answer; i do believe its (b) 12.5 years of age;

the answer is b, encourage free trade