What does Papa's story about mantennas reveal? A. People visit their relatives more now than they did long ago. B. Transatlantic phone calls are a good way to communicate. C. It is difficult to travel to the United States from Cabo Verde. D. It is possible to feel close to loved ones even if they are far away.

i think it may be b, i'm not exactly too sure on this. but b seems to make more sense.

voracity is the noun corresponding to the adjective voracious, which means (1) eager to consume a great amount of food, or (2) marked by an insatiable appetite. veracity is far more common than the rare voracity, so the latter is sometimes used in place of the former.