If we imagine ourselves in the scene in which the witness speaks with a firm and confident voice saying "that is the man I saw", the most probable thing is that it convinces us because she is very sure of herself, the witness does not doubt it for a moment, she/he is stating it.
The word <u>averred</u> can be replaced by <u>stated</u> since they have the same meaning. Other synonims can be claim, declare or affirm.
The answer for this question is b
Hemisphere ~ sphere
Graceful ~ grace
Unfriendly ~ friend
He needed it to return to the normal why? because, before world war, Harding’s was United States presidential candidate. Harding’s promise was to return the United States’ prewar mentality, without the thought of war tainting the minds of the American people.