The symbolic meaning of gold in the poem is best described by option C. The wonderful things in life that do not last.
In the poem, gold is used to describe the transition of nature from one state to another. Everything that is colored gold does not last long, that is why it is said that nothing gold can stay. Here, we get the idea that we should get the most of these valuable "things" before they are no longer there.
I believe that the phrase from Mandela's speech that is an example of a metaphor is the first one - 'the children, [...] the greatest of our treasures."
A metaphor is a type of comparison, where two or more things are compared without using words such as <em>like </em>or <em>as. </em>Here, the children are the greatest of our treasures - they are compared to a treasure, something which is the most important thing of all.
The process of removing toxic substances or qualities.
The answer is choice a, news.
