A) The ethical concerns with the sale of these ideas to the public is ;
Denial of informed choice
B) Proponents of these various products and therapies should be held accountable for any health concerns ( i.e Yes )
Pseudoscientific products such as reiki, magnetic therapy and therapeutic touch when used generates harmful radiations in the body which gradually damages vital internal organs in the body although homeopathy is not as harmful as other forms of treatment. Details of these treatments are not clearly given to the targeted consumer to avoid taking responsibilities of the damages.
Hence we can conclude that the answers to the question is as listed above.
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