Answer:
D
Step-by-step explanation:
I used elimination to get the answer.
A) I felt that A was a weak answer.
B) People without anxiety feel anxious at times too, therefore I felt this was an unlikely answer.
C) I think that this is the most unlikely answer as I think it describes depression more than anxiety.
D) I think this is the most detailed and correct answer with the usage of the word pervasive which shows that it is always on their mind.