Which of the following medical advancements occurred during the 1950s? OOO
The first successful orthopedic surgery.
A vaccine for chicken pox eliminated the disease in the U. S.
Surgeons began replacing worn-out heart valves with artificial ones.
Doctors began treating cancer patients with chemotherapy.

The correct answer is C) Surgeons began replacing worn-out heart valves with artificial ones.

The medical advancement that occurred during the 1950s is "Surgeons began replacing worn-out heart valves with artificial ones."

During the 1950s, medical researchers discovered new methods to help people with heart diseases. Some great examples are the pacemaker, better techniques for open-heart surgery, and the invention of the artificial heart. These technological advancements represented the opportunity for patients to live a longer life or a quality life.

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.

answer: nope

explanation: because theirs barely anyone on here to you. but let me see the question. maybe i can , if i know the answer!