The three correct answers that help develop the theme of perception versus reality in the text are:
- Gortsby believes that the absence of a bar of soap means that the young man’s story is untrue.
- Gortsby finds the soap and concludes that the young man’s story was true.
- Gortsby interprets the man’s actions as a performance intended to create sympathy.
These events illustrate Gortsby's shifting perceptions and judgments based on the presence or absence of evidence, highlighting the theme of how reality can be misunderstood or misrepresented based on perception.