The correct answer is letter A
Sinoatrial node (SA) or pacemaker or sino-atrial node: special region of the heart, which controls the heart rate. It is located near the junction between the right atrium and the superior vena cava and consists of a cluster of specialized muscle cells. The rhythmic frequency of these muscle fibers is approximately 72 contractions per minute, while the atrial muscle contracts about 60 times per minute and the ventricular muscle, about 20 times per minute. Due to the fact that the sinoatrial node has a faster rhythmic frequency in relation to the other parts of the heart, the impulses originating from it spread to the atria and ventricles, stimulating these areas so quickly, so that the rhythm of the SA node becomes the rhythm of the whole heart; that's why it's called a pacemaker.
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The answer is 1.45% of your earnings
Extrinsic motivation results when the desire to do something comes from obtaining a reward or avoiding an undesirable consequence; intrinsic motivation results when the desire to do something comes from within. Hence, options D: extrinsic motivation and intrinsic motivation are correct.
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What is extrinsic and intrinsic motivation?</h3>
Extrinsic motivation is that type of motivation in which reward-driven behavior is the norm. In this kind of motivation, rewards are given to one another, and they are tangible in the form of money, grades, and many more. Sometimes they are intangible as well, like praise, fame, and many more.
Intrinsic motivation can be defined as a kind of behavior that arises from within. It is that motivation which is self-driven and given for self-satisfaction.
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Thus, options D: extrinsic motivation and intrinsic motivation, are correct.
Learn more about Intrinsic motivation from here:
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The definition of an executive decision is when a person in power has made a decision of something.