Answer :
The answer is D. This is a proposition and uses adjectives to explain why.
Answer:
The correct answer is C.
Explanation:
In English grammar, the basic structure of a sentence is:
SVOCA (subject, verb, object, complement and adverb).
The adverb phrases could be not only at the end of the sentence but also at the beginning. In this particular case, the adverb phrase is located at the beginning of the sentence and functions as a modifier of the whole sentence. Bear in mind that adverb phrases are ALWAYS followed by a comma.