Read the passage.
Veterans and service members are frequently honored in similar ceremonies and with special discounts at restaurants and theaters, but those small gestures are inadequate compared to the challenges they face when they are home
Which best explains why this statement is an opinion rather than a fact?
A.) This statement cannot be argued
B.) There is only one possible perspective on this issue
C.) It can be proven.
D.) The statement expresses a belief that may not always be true.