Hy,
I provided you with the
OA at the bottom.
A report shows that 60% of the children at school never had measles. Of this 60% not one child has ever been observed to eat the cheese served in school lunches. You can conclude that children who abstain from cheese products will protect themselves from most childhood diseases.
Each of the following, if true, would strengthen the argument, except:
OA: Recent research has pointed to a deficiency in cheese products as one of the major causes of measles.
Do they mean a 'deficiency in cheese' or a 'deficiency ... as one of the major causes'? I mean, how do you know?