The correct answer is C, However. The word However could also be switched out for but, but However is more appropriate. However is a transition word, separating two ideas.
Explanation:
I'm writing this letter from portugal
Loss of appetite. Headaches, stomach aches, or other illnesses. Increased anxiety or panic attacks. Loss of self-confidence.
Answer:
D. It includes authors from various cultures and heritages.
Explanation: