The correct answer is diseases.
Diseases are caused by many agents or factors found in the environment. Yet, some of these diseases are curable, while some are not. These diseases are curable, but sometimes they take a huge toll on an individual's life that may change that person for his or her whole life, which is why prevention is always better than cure.
Answer:
Effectiveness of reinforcement
Explanation:
There are four important factors in the use of a reinforcer, which include: contingency, Immediacy, size, and deprivation. All of these factors have their pros and con in usage. Contingency makes it possible for a reinforcer to be delivered only for the desired behaviour, what fosters a more effective reinforcer.” For instance: A child is instructed to clean the room. There are certain factors to prove that the room was cleaned as a result of their work. The reinforcer will be effective because the task is measurable and achievable.
It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. <span>The first known democracy came about in Greece about 500 BC when Cleisthenes overthrew Peisistratus and the type of democratic institutions that the Greeks then lived under for the next two centuries is DIRECT DEMOCRACY. Hope this helps.</span>