Researchers conduct an experiment in which one group is exposed to treatment a and the other group is exposed to treatment b. the treatments are

Experimental (Treatment A) and control (Treatment B)

Explanation:

When conducting experiments, two groups of test subjects such as people, plants, animals, etc are put in place and these groups must be identical in every but one aspect. The treatment is usually being given to the experimental group or treatment group, which could be inform of new medication, counselling, etc. while the control group would not receive any of such treatments in the process.

the answer is b, encourage free trade

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.