Read the passage and answer the question. 'Our neighbours in Ghana have adopted a single national examination for all polytechnics. Nigeria, with over a hundred polytechnics, should therefore do the same.' The writer's argument assumes that

The only reason offered for Nigeria to adopt the policy is that Ghana has done so. That reasoning holds only if conditions in the two countries are similar enough for the same measure to succeed in both, which the writer takes for granted. The number of Ghanaian polytechnics, the attitude of Nigerian institutions and the difficulty of examinations are not part of the argument.