When making informed decisions about health products or procedures, it's important to consider a. risks, costs, and caution b. credibility, risks, and costs c. risks, credibility, and friends' referrals d. none of the above

B. Credibility, risks, and costs

Should be your answer.

Credibility: you want to make sure that your information is accurate, a fact, and comes from a trustworthy source.
Risks: you want to know any side effects, as well as any potential benefits or harm that can because from taking the medication.
Costs: you want to make sure that the medication you choose, while it is the right one, is affordable through the current provider, or if you will have to find other sources

Hope this helps

Id like to think it would be
B.
Credibility from who your getting the procedure done by and if their good at doing these types of procedures and etc.

 The cost so you know how much your paying so you don't fall in debt in bills and you know what your paying to see if you can afford it

and risk so you know your chances of survival rate in the procedure depending if its really worth it :> 

Aand c is your answer btw your welcome