The correct answer is B) 25 to 50.
It is believed that between 25 and 50 percent of the new settlers were either indentured servants or signed contracts shortly after their arrival
When British people started to travel to the North American territories in the 1600s, historians believe that almost 50% of them were white indentured servants that had contracts to serve the masters in the new colonies.
Indeed, this was the basic system of labor in colonial American times during those first years of settling the East Coast of North America..
Of course, this percentage of indentured servants was changing with the arrival of African slaves during the slave trade. Historians considered that it reduces dramatically with the pass of time. They think that by the time of the Revolutionary war of independence, just 5 to 3% were indentured servants. The majority were African slaves.