I would go with A) to determine the sources credibility because its important to know who published to make sure that person is a reliable source, when it was published so u make sure its up to date and not outdated, or just make sure its at the right time depending on your assignment, whether it was fact checked because u want to make sure it is trustworthy as well. These are important questions that we all have to ask to check credibility.
The answer is sequential terigger
The word "apace" in this paragraph means "quickly" or "swiftly". The author is talking about birth rate declines, not only in the Western world, but all around the world; it is a trend that is not going to disappear or slow down anytime soon, and it is conquering the world at a pace that is becoming faster every moment. In other words, the trend is growing in speed.
The correct verb is (likes)