Veterns and servicemembers are frequently honored in similar ceremonies and with special discounts at restaurants and theaters, but those small gestures are indequate compared with the challenges they face when they come home. Which best explains why this statement is an opinion, rather than a fact?

A) It can be proven

B) This statement cannot be argued

C) There is only one possible perspective on this issue

D) The statement expresses a belief that may not always be true