Final answer:
The correct answer is option b. Regina's research on John Wayne Gacy would have unveiled that he was a serial killer responsible for the murders of 33 young men and boys, not option a, c, or d. He was convicted and executed for his crimes.
Step-by-step explanation:
Regina did a research project on John Wayne Gacy, a notorious figure in criminal history. By investigating Gacy, she would have discovered his disturbing legacy as a serial killer.
John Wayne Gacy was convicted for the murder of 33 young men and teenage boys during the 1970s. His method included luring his victims, committing his heinous acts, and often burying the bodies beneath his own home. The nature of these crimes shocked and fascinate society, prompting widespread media coverage and significant discourse on criminal psychology.
While conducting her research, Regina would have learned about Gacy's background, his modus operandi, and the eventual investigation that led to his capture. It's notable that Gacy's case also brought attention to the concept of the 'killer clown,' due to his habit of dressing as a character named 'Pogo the Clown' for children's parties.
When captured and brought to trial, Gacy's defense did explore mental health claims, but ultimately, he was found guilty and sentenced to death. John Wayne Gacy was executed by lethal injection in 1994, having spent around 14 years on death row. Given these facts, Regina's research on John Wayne Gacy would most likely reveal that he committed 33 murders, aligning with option b.