Answer:
The correct answer is B.
Step-by-step explanation:
The question is incomplete, here is the full question;
Which of the following is the most common reason for decompensation of previously well-compensated heart failure during dental treatment?
A. Tachycardia due to anxiety
B. Failure to take medications as prescribed
C. Orthopnea due to chair position
D. Lack of sufficient oxygen saturation due to use of the rubber dam
And the most common reason out of the given options for decompensation is failure to take medications as prescribed which is a crucial step in the treatment process.
I hope this answer helps.