Read Daniel 1:1-21:

In the third year of the reign of Jehoiakimking of Judah, Nebuchadnezzarking of Babyloncame to Jerusalem and besieged it.And the Lord delivered Jehoiakim king of Judah into his hand, along with some of the articles from the temple of God. These he carriedoff to the temple of his god in Babylonia^[a]and put in the treasure house of his god.

Then the king ordered Ashpenaz, chief of his court officials, to bring into the king's service some of the Israelites from the royal family and the nobilityyoung men without any physical defect, handsome, showing aptitude for every kind of learning,well informed, quick to understand, and qualified to serve in the king's palace. He was to teach them the languageand literature of the Babylonians. The king assigned them a daily amount of food and winefrom the king's table. They were to be trained for three years,and after that they were to enter the king's service.

Among those who were chosen were some from Judah: Daniel, Hananiah, Mishael and Azariah.The chief official gave them new names: to Daniel, the name Belteshazzar;to Hananiah, Shadrach; to Mishael, Meshach; and to Azariah, Abednego.

But Daniel resolved not to defilehimself with the royal food and wine, and he asked the chief official for permission not to defile himself this way.⁹Now God had caused the official to show favorand compassionto Daniel,¹⁰but the official told Daniel, "I am afraid of my lord the king, who has assigned your^[c]food and drink.Why should he see you looking worse than the other young men your age? The king would then have my head because of you."

Daniel then said to the guard whom the chief official had appointed over Daniel, Hananiah, Mishael and Azariah,"Please testyour servants for ten days: Give us nothing but vegetables to eat and water to drink.Then compare our appearance with that of the young men who eat the royal food, and treat your servants in accordance with what you see."So he agreed to this and testedthem for ten days.

At the end of the ten days they looked healthier and better nourished than any of the young men who ate the royal food. So the guard took away their choice food and the wine they were to drink and gave them vegetables instead.

To these four young men God gave knowledge and understandingof all kinds of literature and learning.And Daniel could understand visions and dreams of all kinds.

At the end of the timeset by the king to bring them into his service, the chief official presented them to Nebuchadnezzar. The king talked with them, and he found none equal to Daniel, Hananiah, Mishael and Azariah; so they entered the king's service.²⁰In every matter of wisdom and understanding about which the king questioned them, he found them ten times better than all the magiciansand enchanters in his whole kingdom.

And Daniel remained there until the first year of King Cyrus.

answer the following questions:

(1) What type of research method does Daniel employ?

(2) What are the limitations of this approach?

(3) If you were to design this study, how would change Daniel's experiment?