What artical? You mean article?
The sentence "Good morning to the world!" is an C. exclamatory sentence.
It is easy to recognize this type of a sentence because there is an
exclamation mark at the end, which is how you know this is an
exclamatory sentence. Imperative sentences give some kind of an order,
declarative sentences just give information, and interrogative sentences
ask a question.
I say its...
Traveling toward the west, the caravan made slow but steady progress.
Hope it helped :)