Final answer:
Dr. Blalock acted in a caring manner towards Mr. Thomas.
Step-by-step explanation:
Dr. Blalock acted in a caring manner towards Mr. Thomas.
Dr. Blalock was a renowned surgeon who performed the first successful open-heart surgery.
He worked closely with his assistant, Vivien Thomas, a black surgical technician, and treated him with respect and equality, despite prevailing racial prejudices of the time.
Dr. Blalock recognized Thomas's exceptional skills and even collaborated with him to develop the technique for the life-saving surgery.
This collaboration and respect demonstrate Dr. Blalock's caring demeanor towards his colleague, Mr. Thomas.