The national Geographic video seeks to show how the flu virus spreads while the Bloomberg business article seeks to explain the economic impact of the flu.
Option - A
Explanation :
The national geographic video is a piece of enlightenment as it describes the spreading of the flu, how the virus or the carrier affects the host, the chemical composition of the carrier and the different types of flu viruses with the potential of taking the form of a pandemic and more than 5000 strains that exist
It also describes the animals who have been the sources of flu. It briefly talks about the Spanish flu, Asian and Hong Kong influenza flu that devastated many families in the twentieth century and the swine flu of the year 2009, also describing the cycle of transmission from animals to humans.
The Bloomberg article talks about how flu has been responsible for raising prices.