Answer:
B. She is pretty and vain.
<span>Definitely ineffective, change the topic in order to briefly cover something not on the agenda- that is an example of ineffective group participation.</span><span>its the group leader insists that everyone come to an agreement in the next five minutes.
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It shows he has life experience and knows what he’s talking about
Hey there!
This link is All About the topic sentence of a paragraph:
http://www.csun.edu/~hcpas003/topic.html
Hope it helps!