When you see the words "... the following ...", that means a list of choices
is coming, and you're supposed to choose the best answer from the list.
The list you included with your question is too short to choose an answer from.
The biggest benefit of using an indentured or contract bound servant was that they got free passage to the New World. It was the indentured servants who did most of the dirty and dangerous work in the New World since they were non essential and of little significance.
The drawback of using indentured or contract bound servants for labor was that they were only able to work for someone for a certain number of years as mentioned in their contracts. Then they had to be set free unlike the slaves who did not needed to be set free after a certain time period.
An absolute monarch is a type of form of monarchy in which the monarch holds supreme autocratic authority, principally not being restricted by written laws, legislature, or non written customs.
A political doctrine in defense of monarchical absolutism, which asserted that kings derived their authority from God and could not therefore be held accountable for their actions by any earthly authority such as a parliament.
It made national unity more difficult