The correct answer is A.
Network trees are hierarchical by definition. so it would make sense that this would be used to show the different rankings of people in an organization.They're called network trees because there are groups of shapes (for example circles or stars) connected by a linear backbone.
By being part of the population you are not the sole provider clothes and other goods are made for you many problems you would normally have to worry about are handled by others
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Portraits are being compared to a beautiful, elegant sunset.
The speaker is saying that a portrait is much more fine and beautiful than other faces one sees throughout the day, and a typical evening's sunset is, similarly, not as beautiful as a shiny, smooth-looking sunshine.
True
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