The correct answer is A) wanted to farm the fertile soil.
Working in the middle colonies was attractive because European immigrants wanted to farm the fertile soil.
Many Europeans wanted to emigrate to the American colonies because they wanted to start a new life, they were looking for better jobs or the wanted to profess their religion with liberty after being persecuted by the Church of England. The soil of many regions in the Americas was fertile and good for farming. That was the case of the Jamestown colony in Virginia or other middle colonies such as Maryland or Pennsylvania.