Bertha argues that vitamins and special food supplements are a waste of money. but only yesterday bertha was seen in a health food store, and her friends report that she takes vitamins every day. obviously bertha's argument is crazy.
a) tu quoque(you, too).
b) no fallacy.
c) argument against the person, abusive.
d) appeal to unqualified authority.
e) weak analogy.

explanation:

pay attention. give the speaker your undivided attention, and acknowledge the message.

show that you're listening. use your own body language and gestures to show that you are engaged.

provide feedback.

defer judgment.

respond appropriately.

answer; /// all of the above;

answer; use multiple stimuli;

answer; when circuit courts do not agree on a decision in similar fact pattern;