Answer:It doesn't present information from an unbiased source.
Explanation:
The survey research is based solely on one business or company which conducted this survey and McDonald is a company that sells food which may be critized by health experts as the kind of food which when is eaten constantly will result to obesity.
Chances are when a company conduct a survey which may affect the operation of their own business it is very likely that they may distort the results to ensure this doesn't stab them at the back.
No one will wants to say anything that may jeopardize their own operation and probably put them out of business or lower the number of their customers .
