Active words are used when the person speaking them is doing the action I.E I threw the ball.
Passive is the opposite. It is used when the subject of the sentence has had something happen to it by someone or something else.
Conquering hearts is a matter of love and therefore not violent or warlike as conquering citadels, as that would require an act of war. Love versus war...
Answer:
5 is SYSTEM IT IS CORRECT