Final answer:
Virgil Tibbs in "In the Heat of the Night" exhibits the qualities of being courageous, intelligent, and determined, shown by his handling of a murder case with persistence and analytical thinking.
Step-by-step explanation:
The qualities that can be attributed to Virgil Tibbs in the book "In the Heat of the Night" are appropriately described as courageous, intelligent, and determined. Tibbs demonstrates his courage by working on a murder case in a hostile environment where he is not welcome due to racial prejudices. His intelligence is evident through his methodical and analytical approach to solving the crime, paying close attention to details that others overlook. Lastly, his determination is shown in his unwavering persistence to see the case through to the end, despite the many obstacles he faces. Unlike the timorous or hasty detectives found in other literature, Tibbs is exemplified by his professionalism and calculated demeanor, indicating that an accurate representation of his character would align with options (a) from the given choices.