Aproducer who has a(n) experiences less cost when producing that good when compared with another producer.

A producer who has a "comparative advantage" experiences less cost when producing that good when compared with another producer.

Explanation:

When a producer is able to produce goods at a lower opportunity cost than the cost of other producers or partners of trade, than the term which is used in economics for this is comparative advantage. When you sell goods at lower cost than the others, it’s obvious that you will get stronger sale margins because everyone will buy your products.

the correct answer is "c": the pillars proclaimed his regret at the bloodshed at the battle of kalinga and his conversion to buddhism.

the kalinga war is considered as one of the largest battles in the history of india. it was fought between the between the maurya empire, which ruled the lands of what is now known as india at the time, and the independent feudal kingdom of kalinga.

the army of maurya empire, led by its king ashoka, fought a prolonged war against kalinga. the war ended around 262 bce with the victory of the maurya empire. it is believed that ashoka, after having witnessed the loss of many lives during this war, felt deep responsibility and eventually converted into buddhism.

i would say b. research typically uses a variety of sources