I think the biased one would be the second excerpt
<em>She Prepares to Fight": Though past 50 years of age, she is tall and powerful and looks like she would be dangerous if aroused to a point of hatred.</em>
We can see that it's a biased excerpt because it appears to contain a prejudice that may have affected the writer's beliefs about Mrs. Hossack. Even though it may not display the full situation
Based on the sentence, the adverbial clause is "after he finishes football practice". Adverbial clause is a set of words that is usually preceded by subordinating conjunctions such as after, if, etc.It usually answers the question when, where, what, how or by how much.
