I think d makes the most sense, it isnt b or c because they're sponsored which lets the sponsors tell lies for their benefit
Answer: D. Whether it will become a force for good or ill depends on man, and only if the United States occupies a position of pre-eminence can we help decide whether this new ocean will be a sea of peace or a new terrifying theater of war. (paragraph 6)
Explanation:
The sentence above supports the idea that the United States should explore space as this would benefit humanity.
It does this by insinuating that if the United States are not the ones to lead humanity into space, a situation may arise where such exploration would be a force of ill and a terrifying theatre of war. If the U.S. were to lead it however, it would be a force of good and a sea of peace.
Blanche, by retreating into hysteria and madness, and by refusing to acknowledge her sister as she leaves the apartment with the doctor, may be sparing Stella the horror of having to face the truth about her husband. Blanche's descent into madness shields Stella from the truth.
Answer:
I think "for this reason"
Explanation:
It sounds the best in a sentence using cause and effect.