Answer:
D
Step-by-step explanation:
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D. Walter Cunningham
Walter Cunningham is one of the prominent astronauts in American history. Although he's already retired, he's currently the chairman of the Texas Aerospace Commission. So, this makes him a Texas scientific leader.
Together with Schirra and Don Eisele, Cunningham helped created the first-ever live television transmission from space. It was broadcast from Apollo 7 (October 1968), which was an eleven-day flight towards moon.
So, this explains the answer.
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