What princial explanations offered by the Old Testament that describe
the presence of evil in the world? Which description is the most
emotionally satisfied and which is the most intellencually satisfied?
Please offer four sources to support the claim.

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Put simply, the Old Testamen offers no answers to the problem of evil,
because the problem did not exist.  You have assumed that God is
omnibenevolent (infinitely loving and kind), when this is actually a
relatively modern idea.  Certain the early Christians wouldn't have
believed this (not having a concept of infinity in their numbering
systems for starters).

Furthermore, the God of the old testament (YWHA) is not loving (in my
reasonably experienced opinion).  But supposing you somehow came to
the conclusion that he is, then the only intellectual solution to the
problem is opentheism.  This form of theology dictates that God is not
infinitely powerful, and certainly has a lot of merit.  You see,
free-will can explain man-made evil, but not the naturalistic form
(volcanoes etc), and that is where opentheism comes in.  The answer is
simply "God wasn't powerful enough to stop it."

Finally, opentheism can be proved as the only logical answer to the
question "Can God create a stone that is too heavy for him to pick
up?"  Either answer shows that he is limited, and thus we have to
conclude that omnipotence (infinite power) is a logical fallicy.

The complete and correct answer to your question is here
http://www.watchtower.org/library/dg/article_06.htm

Thanks for giving your comments to my question. I clearly know that is
not easy to fully describe it since everyone would have different
views on a same topic especially to a moral question. Though, I very
appreciate all your help.

I would suggest a study of the book of JOB. The sole purpose of this
book is a theological questioning of "why bad things happen to good
people", or moreso a human attempt to understand how God allows bad
things in the world. Ancient Judiasm attributed all things good and
bad to be from God and God alone. The book of Job examines this
concept, and shows that it is ok for humans to question God's
motives....they may not get an answer...but it is Ok....