Answer: The paired comparison test
Explanation:
The paired comparison test is a simple sensory test organized to identify the differences between two samples. A group of people are invited to test for the differences by rating the attributes of two samples. It may also be used to test for preference, where the participants are tasked with rating the sensory preference of the attributes of the two products. Here, fatigue is reduced due to the small sample size and it allows for better responses.
Let's think of an example for such an organization: United Nations, The European Union, NATO. How would you expect them to communicate with the masses?
The most likely options are either through posters, TV advertisements or press conferences seen in the TV. This means that they communicate through the media - answer b.
Voyager 2
On November 5, 2018, Voyager 2 officially left the solar system as it crossed the heliopause, the boundary that marks the end of the heliosphere and the beginning of interstellar space.