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

The question is asking us: "When making informed decisions about health products or procedures, it's important to consider... We definitely have to consider the risks, if the risks are too high, we might want to decide against a procedure. Another thing we might want to consider is the cost: can we afford the procedure? We should also think: is the source credible? Is the doctor experienced, for example? So the best answer is:

B.credibility, risks, and costs

Tachycardia is a type of heart rhythm disorder in which heart beats faster than the normal rate. in this, the upper or the lower heart chambers are faster. it then pumps less blood flow to the other parts of the body even the heart itself. in the situation, the 73 year old female needs to have an antiarrhytmic medicine or digoxin.

C. 1960’s and 1970’s