The reason a statement specific to state powers was not part of the original U.S. Constitution was that:

a. New York delegates refused to allow discussion on the matter.

b. it was assumed to be obvious.

c. it was deleted under the Virginia Plan.

d. no such consensus existed at the Constitutional Convention.

e. the U.S. Constitution would not have been ratified.

I think it is B but I am not sure!

To determine the correct answer, let's examine the options and eliminate the ones that are clearly incorrect.

a. New York delegates refused to allow discussion on the matter.
This statement does not align with historical records. The New York delegates at the Constitutional Convention did not refuse to allow discussion on state powers. Hence, we can eliminate this option.

b. It was assumed to be obvious.
While it may be true that state powers were assumed to be obvious by some delegates, this assumption alone does not explain why a specific statement regarding state powers was not included in the original U.S. Constitution. Thus, this option does not provide a complete explanation and can be eliminated.

c. It was deleted under the Virginia Plan.
The Virginia Plan was a proposal put forward by the Virginia delegation during the Constitutional Convention. However, it focused more on the structure and representation of the national government, rather than specifically addressing state powers. Consequently, this option is not a satisfactory explanation and can be eliminated.

d. No such consensus existed at the Constitutional Convention.
This statement suggests that there was a lack of agreement or consensus among the delegates at the Constitutional Convention on the inclusion of a specific statement regarding state powers. This lack of consensus could indeed explain why such a statement was not part of the original U.S. Constitution. Therefore, this option appears to be a plausible explanation.

e. The U.S. Constitution would not have been ratified.
While it is possible that the absence of a specific statement on state powers could have impacted the ratification of the U.S. Constitution, this option assumes a specific outcome and does not directly address why the statement was not included. Consequently, we can eliminate this option.

Considering the options provided, it appears that the most plausible answer is d. No such consensus existed at the Constitutional Convention. Without a consensus among the delegates, a specific statement on state powers was not included in the original U.S. Constitution.