Final answer:
The question does not provide information about James' argument against Clifford or whether Clifford would agree or not.
Step-by-step explanation:
James' argument against Clifford
James' argument against Clifford is not specified in the given information. The question asks for the major arguments put forward by proslavery advocates and how one would argue against their statements. It does not provide any specific information about James' argument against Clifford.
Clifford's agreement
Since the question does not provide any information about James' argument against Clifford, it is not possible to determine whether Clifford would agree or not.