Should i say yes or no when asked if this W-2 for work i did as active duty military but it was for work completed while i'm in the Army Reserves?

No.  Active duty is "A person who is active duty is in the military full time. They work for the military full time, may live on a military base, and can be deployed at any time. Persons in the Reserve or National Guard are not full-time active duty military personnel, although they can be deployed at any time should the need arise."