Dear diary,
The air quality was really bad today.
The air is filled with road dust and vehicle pollution. I envy Dilshad Garden. Compared to over here in Dwarka, the air is great there. Our area is the most polluted while there's is the least. It is so difficult to breathe with so much in the air. I can only hope I won't get follow up diseases.
(I hope this is enough? If not I can add more.)
-cassie
Answer:
However
Explanation:
However is used because this portion of the sentence is referring to a completely new and unrelated subject.
D. because a sentence without a question mark means to command so the answer is D