Several studies have demonstrated that Hispanic American combat veterans and police officers have higher rates of PTSD than other veterans or officers. Research into the causes of this difference have MOST often focused on possible:

cultural belief system and social support factors

Explanation:

Research into the causes of this difference have MOST often focused on possible cultural belief system and social support factors. Due to the ways to get the answer resolves round them

answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;

answer; ///i believe the correct answer is the empire state building;