Final answer:
Mr. Wilson's evening was likely spent at home in a comfortable setting, based on his attire and the activity of watching fireworks.
Step-by-step explanation:
Based on the statement about Mr. Wilson watching fireworks on July 4th in his pajamas, we can conclude that his evening was spent at home. It's common for people to wear pajamas during the evening as they relax and wind down for the day, suggesting that Mr. Wilson was in a comfortable, domestic setting, likely enjoying the fireworks from his own home or nearby. There is also an implication that he had a leisurely evening, as one typically does not don pajamas for more formal or active engagements.