Question

read the excerpt from \my heart is bursting.\
you, the commissioners, have come from afar to listen to our grievances. my heart is glad and i shall hide nothing from you. i understood that you were coming down to see us. i moved away from those disposed for war, and i also came along to see you.
how does settainte (satanta)s humble tone affect the meaning of his speech?
it causes those who are listening to wonder what motive settainte (satanta) has for being so polite and genial.
it assures those who are listening that settainte (satanta) is speaking with honesty and has acted in good faith.
it reminds those who are listening that they should appreciate how far settainte (satanta) has traveled to meet with them.
it reinforces for those who are listening that settainte (satanta) is not afraid of war should he deem it necessary.

Explanation:

In the excerpt, Satanta says "My heart is glad and I shall hide nothing from you" which shows honesty. His humble tone like moving away from war - inclined people to meet the commissioners gives an impression of good - faith action.

Answer:

It assures those who are listening that Set'tainte (Satanta) is speaking with honesty and has acted in good faith.