Answer:
The mood in the lab that night was anxious, gloomy, and fearful.
Pieces of evidence:
1. "It was on a dreary night of November that I beheld the accomplishment of my toils. With an anxiety that almost amounted to agony, I collected the instruments of life around me, that I might infuse a spark of being into the lifeless thing that lay at my feet".
2. "How can I describe my emotions at this catastrophe, or how delineate the wretch whom with such infinite pains and care I had endeavoured to form?"
Explanation:
On that rainy night when Victor Frankenstein brought the monster to life, he was in an anxious mood. He hoped to see the creature for which he labored for two years come to life. However, what Victor saw when he used electricity to breathe life into the creature was far from what he expected.
The creature was indeed a monster with the ugly features which Victor described it as having. That night Victor struggled to sleep. When he woke and saw the monster look at him, he fearfully ran out of the building.
