Explanation:
somebody had helped me when I fell down
(l think not so sure)
I think is going to be A historian for the web site of Sioux tribe of Montana. I hope this is correct.
Unluckily, you missed to show her the choices in which we can choose our answers from. However, it must be noted that for oral presentation, one must be very knowledgeable about the topic at hand and be able to present it well by being confident in front of the audience.