A)Provide an Informal Analysis of the Following Passage;or

A)Provide an informal analysis of the following passage;or
B)in analyzing the passage,do the following:
a.Identify the causal hypothesis at issue.
b.Identify what kind of study it is.
c.Describe the control and experimental groups.
d.State the difference in effect (or cause)between control and experimental groups.
e.Identify any problems in either the study or the report of it,including but not necessarily limited to uncontrolled variables.
f.State the conclusion you think is warranted by the report.
"You don't need to become a complete ascetic in order to lower your cholesterol levels.Scott M.Grundy of the University of Texas Health Science Center at Dallas and his colleagues rotated nine men through two-month stints on each of three diets-the American Health Association diet,in which a maximum of 30 percent of the calories come from fat;a 40 percent fat diet;and a 20 percent fat diet.The subjects' average cholesterol level was 210 mg/dl on entry.
"In all the men,the blood levels of total cholesterol and of the 'bad' form of cholesterol,LDL-cholesterol,fell to around 175.'There were no significant differences [in cholesterol levels of the men] on these three diets,' Grundy says."
-Science News