Answer:
The owner does not owe a commission to the ABC Realty firm.
Explanation:
- Though the owner had given ABC Realty the responsibility to find a buyer for his property, the owner managed to find a buyer on his own way before the stipulated time that had been given to the firm to find a buyer.
- Hence, because ABC Realty could not find a buyer for the property before the owner himself did, the owner does not owe any commission to the firm for listing his property.