What must first be done before treating an animal for a behavioral problem?

A medical condition must be ruled out first before treating an animal for a behavioral problem

Ruling out a medical condition by mental health professionals is the elimination of a suspected illness from consideration. Mental health illnesses show the same symptoms. Due to this, a variety of medical conditions are ruled out in order to make an accurate diagnosis before providing the right treatments.  

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation:

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.