Final answer:
The oversupply of oil and increase in interest rates negatively impact the financial perspective of U.S. shale's balanced scorecard.
Step-by-step explanation:
The oversupply of oil in world markets and the increase in interest rates primarily negatively impacted the financial perspective of U.S. shale's balanced scorecard. The financial perspective focuses on the financial performance of a company, including measures such as profitability and return on investment. The oversupply of oil leads to lower oil prices, which can result in reduced revenue and profit for oil companies. Additionally, the increase in interest rates can increase borrowing costs for shale companies, impacting their financial stability and ability to invest in new projects.