Answer:
B, On September 23, 1999, NASA officials were aghast when the $125 million Mars Climate Orbiter vanished as it prepared to enter the red planet’s orbit.
Explanation:
The use of word imagery and mystery make this a good intro sentence. MAKE SURE IT MAKES SENSE THOUGH! I can't see which sentence is supposed to come after this, so make sure it makes sense with the paragraph
Answer:
B. It has been my experience.
Explanation: When a problem presents itself, keep working at.
Answer:
" The Published Writings of Herbert Hoover ." Accessed Jan. 9, 2020. Herbert Hoover. " American Individualism ," Hoover Institution Press, 2016. George H. Nash. " Freedom Betrayed: Herbert Hoover's Secret History of the Second World War and Its Aftermath ," Hoover Institution Press, 2011.
Explanation: