Karla should do the following to evaluate the validity of the treatment:
Herbal supplements may be defined as a medicinal product made from a plant that is considered to be useful in regaling a disease or staying healthy.
If Karls wants to evaluate the validity of the treatment, she is foremostly required to read all the testimonials and T&C on the website, then ask her doctor for advice. Try the herbal supplements herself first.
Therefore, the correct options for this question are 2, 3, and 5
To learn more about Herbal supplements, refer to the link;
https://brainly.com/question/1913673
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