Answer:
a. circumflex artery
Step-by-step explanation:
Circumflex artery -
This artery branches in the left coronary artery and supplied the most of the left atrium , i.e. the lateral free walls of left atrium and part of the anterior papillary muscle .
This artery give a variable number of the left marginal branches in order to supply the left ventricle .
The largest branch is the terminal branch .
The occlusion of the circumflex artery can lead to the damage of the left ventricle .