The majority of collisions at railroad crossings are the result of: malfunctioning signals, poor visibility, faulty breaks, and human errors.
 
        
             
        
        
        
Answer:
anecdotal evidence
Explanation:
Anecdotal evidence has to do with evidence gotten in an informal which is backed up by personal testimony and it may not be regarded as a piece of scientific evidence because it has to do with word of mouth.
Therefore, having critical thinking about media reports of research needs the researcher to be familiar with this anecdotal evidence as it relies on personal testimony.
Some examples of an anecdotal evidence is
- Wow! This wonder drug completely cured me of cancer.
- I drank heavily for years but my kidney is fine. I'm sure alcohol does not affect the kidney. 
 
        
             
        
        
        
C restrictive but I'm not entirely sure
        
             
        
        
        
Answer:
1. Troubled family life.
2. Pressure to be a notable student.
3. Pressure to fit in.
4. Easy access to substances within the school.
Explanation:
Many reasons can lead a student to commit the abuse of harmful substances that will cause serious problems to the health, academic life and even the personal life of students.
Among these problems the most common are the result of an unsatisfactory family life and the pressure to fit in groups. Unsatisfactory family life can cause a lot of sadness and neglect in the lives of young people, who will use the substances as an escape from that environment. On the other hand, the pressure to fit in can make young people use the substances to look cool and to have a sense of belonging.
Many reasons can lead a student to commit the abuse of harmful substances that will cause serious problems to the health, academic life and even the personal life of students.
Among these problems the most common are the result of an unsatisfactory family life and the pressure to fit in groups. Unsatisfactory family life can cause a lot of sadness and neglect in the lives of young people, who will use the substances as an escape from that environment. On the other hand, the pressure to fit in can make young people use the substances to look cool and to have a sense of belonging.