Answer:
A. are difficult to distinguish from other illnesses is the correct answer.
Explanation:
A fad diet or diet cult is a diet that promises weight loss or other health advantages, such as longer life, and usually relies on pseudoscience rather than science to make many of its claims. In many cases, the diet is characterized by highly restrictive or unusual food choices.
The answer is on socratic search it in that data base :)
Answer:
Get better at math yourself kid
Being quick to find fault.