question_answer

Select the option showing correctly the change from Active to Passive voice.

These gave them an advantage over the other tribes.

A)  They gave an advantage over the other tribes who used long spears by them.

B)  They had given an advantage over the other tribe?s spears by them.

C)  They were given an advantage over the other tribes by these.  

D)  These were given an advantage over the other tribes.