The event that directly contributed to Congress passing the War Powers Act of 1973 was the bombing of Cambodia (option D).
The War Powers Act of 1973 is the name of a resolution of the United States Congress designed with the goal of limiting the ability of the US president to initiate military action in other countries.
This war powers law was the result of Congressional frustration when President Nixon ordered secret bombing on Cambodia during the Vietnam War without the consent of Congress.
Therefore, Congress approved the War Powers Resolution of 1973, with the intention of limiting the president's authority to wage war and reaffirm his authority.
Learn more about Congress in: https://brainly.com/question/3856177
