Answer:
The correct option is option C from the below options.
Explanation:
As the question was not complete, the complete question is found online and is attached here with.
Also the options are not given which are as below:
(A) an obstacle to Congressional passage being the concern
(B) a concern as an obstacle to Congressional passage
(C) as an obstacle to Congressional passage the concern
(D) the concern, an obstacle to Congressional passage,
(E) as an obstacle for Congress to pass it the concern
Option A is incorrect as it is not an obstacle.
Option B is incorrect as it is not a concern to an obstacle
Option C is correct as the issue is acting as an obstacle.
Option D is incorrect as the two phrases are not being related.
Option E is incorrect as the concern and obstacle are not correlated.