Explanation
Correct answer: B.
Choice B is the best answer. The sentence explains an advantage of the ICAA’s archive being digital, noting that the archive provides more access to historical documents since they don’t have to be removed from their countries of origin.
Why the other choices are wrong
Choice A
Choice A is incorrect. The sentence emphasizes the number of documents in the ICAA archive; it doesn’t explain an advantage of the archive being digital.
Choice C
Choice C is incorrect. The sentence notes the types of historical documents the ICAA’s archive contains; it doesn’t explain an advantage of the archive being digital.
Choice D
Choice D is incorrect. The sentence identifies who oversaw the creation of the ICAA’s online archive; it doesn’t explain an advantage of the archive being digital.