Correct Answer: the newly released books

Solution : The correct choice is the first option.

Explanation:

• The newly released books: This option correctly conveys the idea that the books were recently made available to the public or readers.
• The newly regaled books: "Regaled" typically means entertained or amused, which does not fit the context of books being added to a library.
• The newly relieved books: "Relieved" doesn't make sense in the context of books being added to a library.
• The newly reverberated books: "Reverberated" means echoed or resounded, and it doesn't make sense in the given context.

So, the correct sentence would be: "She makes sure that all the newly released books are available in her personal library."