I'll break this one down from top to bottom because I liked it so much! This is a
weaken question.
No indication that justice separated from the pulp has any properties it doesn't have when not separated
→
Save your money ("Don't buy/There is no reason to buy a juicer")
This argument is pretty weak. Just because the properties of the fruits/vegetables are going to be the same whether they are in a juice-form or in their original form doesn't mean that a juicer is a waste of money! There are many reasons why people like to juice their food! Perhaps they like the taste better (juice probably tastes a bit more sugary), perhaps it is less messy (I hate when my hands get sticky from eating an apple), or maybe they just want to look super cool with their juice (eating whole fruits and veggies is so 20th century). The point is, the argument just assumes that there is
one reason to use/buy a juicer - to get something
different out of the fruit/veggies. When the juicer fails to do this, the author just assumes that there is therefore no reason to buy the juicer!
(A) This gives a distinct benefit to the juicer! People find it easier to consume the fruits/veggies in liquid form! Awesome. So why wouldn't we want to buy the juicer then? This seems to really weaken that argument.
(B) Juice doesn't contain fiber → juice is less healthy than whole fruit. This actually strengthens the argument. It gives a reason NOT to buy/use a juicer: it isn't as healthy as eating the whole fruit! So why would we buy a juicer?
(C) Yea but, as mentioned, it doesn't matter how much a juicer would hurt one's piggy bank. Something can be not that big of a deal to buy (a pack of gum for $0.72 for example), but still be a bad deal (what if that pack of gum for $0.72 had razor blades in it?).
(D) This is like the opposite of an ad hominem argument. However, being an expert of the field (if you could consider the nutritionist an expert to begin with) doesn't validate or invalidate any argument. Thus, this just simply doesn't weaken (or strengthen mind you).
(E) Vitamin pills?! Now we are talking crazy here.