I believe that this is true.
For “The”, we use it to refer to something. For example, we would say “Oh look, it’s the cookie store”.
An is used to modify non-specific or non-particular nouns.
His
Exp: this is because of the word "each" making the sentence refer to a single person, even though the plural "people" is in the sentence.
Answer: [D]: "<span>The world is a confusing and hostile place."
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