Since a participle takes the form: verb + -ing, the only word in this sentence which has such a form is B, 'challenging'. 'Puzzle' is a noun, 'crossword' is an adjective, 'created' is a verb.
'Where is the airport?' is a sentence because it contains a complete subject and predicate. It may be a bit confusing at first, but if you're ever confused about the grammar in a question, just switch around the order of the words so that the subject comes first.
Where is the airport?
In this sentence, 'airport' is the subject and 'is' is the verb. However, since the subject usually comes before the verb, you might want to switch them around to make it a bit less confusing.
The airport is where?
Now it becomes more obvious that there is a subject and a verb, and that they form a complete sentence.
Hope this helps!
Symbolism in Literature. ... In literature, symbolism can take many forms, including: A figure of speech where an object, person, or situation has another meaning other than its literal meaning. The actions of a character, word, action, or event that have a deeper meaning in the context of the whole story.
End of the story is horrifying and shocking: Montresor traps and entombs living Fortunato behind the brick wall. The victim cries to the executioner: "For the love of God"(Poe, 214) but the only respond is ironical repeat of his own words.
