Final Answer:
Vladimir's mother is in a good mood because Ivan has stopped by for a visit. because The unexpected visit of a dear friend like Ivan brought joy to Vladimir's mother, uplifting her mood with the warmth of companionship.
Step-by-step explanation:
Ivan's unexpected visit brought immense joy to Vladimir's mother. The sight of a familiar face, especially someone like Ivan, must have triggered a wave of happiness.
Human connections and social interactions play a crucial role in influencing one's mood, and the element of surprise in a visit can amplify positive emotions.
The warmth of companionship and the shared moments of laughter or conversation contribute to an uplifting atmosphere. It's the simple yet profound pleasure of spending time with loved ones that has put Vladimir's mother in such a good mood.
In contrast to external events like winning the lottery or wedding preparations, the presence of a dear friend can have an immediate and heartwarming effect, creating a positive and lasting impact on one's emotional well-being.
The joy derived from meaningful relationships often surpasses the fleeting excitement of material gains, making the presence of Ivan a source of genuine happiness for Vladimir's mother.
Therefore, the correct answer is option 1