If the store is open then the lights are on. But the store is not open. So, its lights are not on.  The structure of the above argument is:      

 Since some Chevrolts are black and some Chevrolets are trucks, it necessarily follow that Chevrolet makes at least some black trucks.  Is the above valid or invalid? If invalid, construct your own counterexample. You do not need to submit it.  

Is the following argument invalid?   Some historical texts are scientific texts. All scientific texts are truth-stating. So, some truth-stating texts are not historical texts. 

What is the standard tool used by mental health care professionals to promote an accurate diagnosis and treatment for mental disorders called?

Rape is a forcible sexual act and one of violence.

What is the drug that may be abused, is currently listed as a Schedule I drug, but is now legal in a number of states?

Which stage of grief is NOT one identified by Dr. Elisabeth Kubler-Ross?

What is the treatment of choice for seasonal pattern disorder?

A rape kit commonly includes materials for collecting all of the following EXCEPT:

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