The thematic group involved in the transmission and generation of electrical power is the energy system. Thus, Option D is the correct answer.
Thematic groups refers to groups that are made up of individuals who focus on the same theme or idea. Thematic Group specializes in the improvement of a selected talent or attitude so as for the group contributors to have the ability to finish a particular activity.
Thus, The thematic group involved in the transmission and generation of electrical power is the energy system. Option D is the correct answer.
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