“Address to the Nation on the Explosion of the Space Shuttle Challenger” by President Ronald Reagan what is the text structure

People brave enough to explore new territory face great risk. Losing the Challenger was an effect of taking the space program for granted.

*A sentence from the text that most strongly supports the answer to the previous question?*

"In his lifetime the great frontiers were the oceans, and an historian later said, ‘He lived by the sea, died on it, and was buried in it.’”

greet them:

buenas noches.

that is considered night time which is when "good night" is used.

i believe the answer is d : )