Explanation

Reading the question: We have a passage to complete logically. As with all logical continuation questions, it will be especially important to predict the correct answer. We see the word "furthermore" before the blank. That could introduce either additional evidence or an additional conclusion, but upon inspection, we see that it's introducing further evidence because it comes after the sentence, "They base their judgment on..." Meanwhile, the conclusion is the first sentence. So the blank will include either a new piece of evidence that Mark Antony was buried in this location, or a refinement or additional detail about the piece of information we already have--the partial mask. Most people would prefer the former possibility, but we would actually prefer the latter, what you could call "a mask evidence strengthener." We look for a mask evidence strengthener in the answer choices.

Applying the filter: Choice (A) is a mask evidence weakener, because it undermines the idea that we've nailed the mask to one location. So (A) doesn't pass the filter. Choice (B) is a mask evidence strengthener, so (B) passes the filter. (C) is a new piece of information and it's dated incorrectly anyway, so (C) is out. (D) is better than (C); it's not a mask strengthener, but rather a new piece of information. (E) is similar to (D); a new piece of evidence, not a mask strengthener. We're left at this point with (B), (D), and (E).

While Choices (D) and (E) lend strength to the argument, choice (B) is the most logical continuation of the passage. Choice (B) strengthens the main connection of the argument, which is between the mask and the rulers' burial location. And (B) is even so specific to say that masks "always capture the facial features of the buried ruler accurately," touching on a matter of supreme importance to the argument. Choice (D) is somewhat redundant, because the prompt has already indicated that a northern location is more likely, due to its proximity to Alexandria. Choice (E), unlike (B), doesn't strengthen the quality of the evidence that is the mask, and instead "piles on" new evidence of unclear merit: "faded coins." The correct answer is (B).