Answer:
It is an adverb phrase.
Explanation:
Adverb:
It modifies a verb, adjective, another adverb or group of words. In this example adverb down is modifying verb fell.
Preposition:
Typical definition of preposition in most of the dictionaries/online resources include that a preposition is used before non, noun phrase, pronoun or -ing form of verb, And they usually show a relationship between two nearby words.
In this example, there are no nearby two words between which down has to show relationship. Let's complete this sentence, for instance, the portrait fell down <em>on</em> the table, or the portrait fell down <em>in</em> the tub. We have to use a preposition <em>on</em> or <em>in</em> to show portrait's relation with table or tub. This shows, since there is no word to show portrait's relation, so no preposition is used.
You put down whats the problem and which survey it was and who run it
Hello. You did not show the poem to which this question refers. Thus, it is not possible to read the poem and analyze the development of the theme. However, I will try to help you in the best possible way.
In a poem the themes are developed through the use of literary devices. The most common is that this theme is presented through the rhyme or other sound devices, since these devices highlight a specific element of the text, usually the theme. However, symbolism is also used to represent concepts that emphasize the theme of the poem.