A thesis statement is generally the first few sentences of your writing to help get your readers interested in what they'll be reading. So, if your thesis is unclear, they'll be confused about what's going on before anything even happens.
Number 3 would be the only logical choice in my opinion because everything else would be in a narrative or story of some sort. Expository essays are exclusively informational.
No there are no more than 20 categories of bias
<span>One support of the behavioral perspective is how B. F. Skinner s ideas have brought to light how the environment and learning influence personality. Skinner's most important work is his theory on operant conditioning which states that people's future behavior are influenced by the consequences of their past behavior.
This means that people operate in their environment and learn from the consequences of their behavior. Good consequences encourage the behavior that produced them, while bad consequences limit the behavior that caused them.</span>
